set the subversion eol-style to native for these files

--HG-- extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402354

set the subversion eol-style to native for these files
--HG-- extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402354
91c9544a · Davis King · 8fa33842 · 91c9544a · 91c9544a · 91c9544a
Commit 91c9544a authored Jun 22, 2008 by Davis King
20 changed files
--- a/docs/docs/kernel_1db.txt
+++ b/docs/docs/kernel_1db.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      47843       2.51658        no             
 play:      125179      45069       2.88029        no             
 html:      24603       7914        2.57334        no             
 Csrc:      11150       3279        2.35265        no             
 list:      3721        1281        2.7541         no             
 Excl:      1029744     210286      1.6337         no             
 tech:      426754      115826      2.17129        no             
 poem:      481861      157348      2.61234        no             
 fax:       513216      56477       0.880362       no             
 SPRC:      38240       14466       3.02636        no             
 man:       4227        1780        3.36882        no             
 average: 2.43362
 time: 2.296sec
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      29758       2.13969        no             
 book1:     768771      247700      2.57762        no             
 book2:     610856      168694      2.20928        no             
 geo:       102400      67817       5.2982         no             
 news:      377109      126675      2.68729        no             
 obj1:      21504       10871       4.04427        no             
 obj2:      246814      82948       2.6886         no             
 paper1:    53161       18113       2.72576        no             
 paper2:    82199       27700       2.6959         no             
 pic:       513216      56477       0.880362       no             
 progc:     39611       13622       2.75115        no             
 progl:     71646       17263       1.92759        no             
 progp:     49379       12032       1.94933        no             
 trans:     93695       19505       1.6654         no             
 average: 2.5886
 time: 2.86sec
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           6           48             no             
 aaa:       100000      20          0.0016         no             
 alphabet:  100000      66          0.00528        no             
 random:    100000      88475       7.078          no             
 average: 13.7712
 time: 531ms
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     1130433     1.94957        no             
 bible:     4047392     844807      1.66983        no             
 word:      2473400     504129      1.63056        no             
 average: 1.74999
 time: 5.266sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_1db.xml
+++ b/docs/docs/kernel_1db.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_1db</title>
   <body from_file="kernel_1db.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/kernel_1ea.txt
+++ b/docs/docs/kernel_1ea.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      40695       2.14059        no             
 play:      125179      37421       2.39152        no             
 html:      24603       6859        2.2303         no             
 Csrc:      11150       2792        2.00323        no             
 list:      3721        1084        2.33056        no             
 Excl:      1029744     156897      1.21892        no             
 tech:      426754      102805      1.9272         no             
 poem:      481861      136664      2.26894        no             
 fax:       513216      51109       0.796686       no             
 SPRC:      38240       12590       2.63389        no             
 man:       4227        1530        2.89567        no             
 average: 2.07614
 time: 3.062sec
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      26039       1.87228        no             
 book1:     768771      218772      2.27659        no             
 book2:     610856      151985      1.99045        no             
 geo:       102400      59371       4.63836        no             
 news:      377109      115334      2.4467         no             
 obj1:      21504       9832        3.65774        no             
 obj2:      246814      75065       2.43309        no             
 paper1:    53161       15263       2.29687        no             
 paper2:    82199       23368       2.27429        no             
 pic:       513216      51109       0.796686       no             
 progc:     39611       11549       2.33248        no             
 progl:     71646       15297       1.70806        no             
 progp:     49379       10447       1.69254        no             
 trans:     93695       17677       1.50932        no             
 average: 2.28039
 time: 4.172sec
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           7           56             no             
 aaa:       100000      17          0.00136        no             
 alphabet:  100000      65          0.0052         no             
 random:    100000      82599       6.60792        no             
 average: 15.6536
 time: 672ms
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     1130095     1.94899        no             
 bible:     4047392     848956      1.67803        no             
 word:      2473400     542983      1.75623        no             
 average: 1.79442
 time: 6.516sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_1ea.xml
+++ b/docs/docs/kernel_1ea.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_1ea</title>
   <body from_file="kernel_1ea.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/kernel_1eb.txt
+++ b/docs/docs/kernel_1eb.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      40220       2.1156         no             
 play:      125179      37451       2.39344        no             
 html:      24603       6819        2.21729        no             
 Csrc:      11150       2770        1.98744        no             
 list:      3721        1085        2.33271        no             
 Excl:      1029744     158436      1.23088        no             
 tech:      426754      100243      1.87917        no             
 poem:      481861      136151      2.26042        no             
 fax:       513216      50374       0.785229       no             
 SPRC:      38240       12387       2.59142        no             
 man:       4227        1528        2.89189        no             
 average: 2.06232
 time: 4.875sec
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      25279       1.81764        no             
 book1:     768771      216389      2.25179        no             
 book2:     610856      146986      1.92498        no             
 geo:       102400      58768       4.59125        no             
 news:      377109      109292      2.31852        no             
 obj1:      21504       9819        3.6529         no             
 obj2:      246814      72662       2.3552         no             
 paper1:    53161       15128       2.27656        no             
 paper2:    82199       23186       2.25657        no             
 pic:       513216      50374       0.785229       no             
 progc:     39611       11434       2.30926        no             
 progl:     71646       14712       1.64274        no             
 progp:     49379       10210       1.65414        no             
 trans:     93695       16885       1.4417         no             
 average: 2.23418
 time: 5.421sec
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           7           56             no             
 aaa:       100000      17          0.00136        no             
 alphabet:  100000      64          0.00512        no             
 random:    100000      81881       6.55048        no             
 average: 15.6392
 time: 907ms
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     1129161     1.94738        no             
 bible:     4047392     794809      1.571          no             
 word:      2473400     454450      1.46988        no             
 average: 1.66275
 time: 7.39sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_1eb.xml
+++ b/docs/docs/kernel_1eb.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_1eb</title>
   <body from_file="kernel_1eb.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/kernel_1ec.txt
+++ b/docs/docs/kernel_1ec.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      40367       2.12334        no             
 play:      125179      37785       2.41478        no             
 html:      24603       6828        2.22022        no             
 Csrc:      11150       2710        1.94439        no             
 list:      3721        1084        2.33056        no             
 Excl:      1029744     162760      1.26447        no             
 tech:      426754      100488      1.88376        no             
 poem:      481861      139110      2.30955        no             
 fax:       513216      50276       0.783701       no             
 SPRC:      38240       12219       2.55628        no             
 man:       4227        1533        2.90135        no             
 average: 2.06658
 time: 5.484sec
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      25153       1.80858        no             
 book1:     768771      220128      2.2907         no             
 book2:     610856      146040      1.91259        no             
 geo:       102400      58737       4.58883        no             
 news:      377109      108774      2.30753        no             
 obj1:      21504       9823        3.65439        no             
 obj2:      246814      71148       2.30613        no             
 paper1:    53161       15116       2.27475        no             
 paper2:    82199       23346       2.27214        no             
 pic:       513216      50276       0.783701       no             
 progc:     39611       11351       2.29249        no             
 progl:     71646       14125       1.5772         no             
 progp:     49379       9966        1.61461        no             
 trans:     93695       16068       1.37194        no             
 average: 2.21826
 time: 6.188sec
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           7           56             no             
 aaa:       100000      17          0.00136        no             
 alphabet:  100000      65          0.0052         no             
 random:    100000      81869       6.54952        no             
 average: 15.639
 time: 1.109sec
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     1160064     2.00068        no             
 bible:     4047392     760498      1.50319        no             
 word:      2473400     422419      1.36628        no             
 average: 1.62338
 time: 11.203sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_1ec.xml
+++ b/docs/docs/kernel_1ec.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_1ec</title>
   <body from_file="kernel_1ec.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/kernel_2a.txt
+++ b/docs/docs/kernel_2a.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      55655       2.9275         no             
 play:      125179      49648       3.17293        no             
 html:      24603       8345        2.71349        no             
 Csrc:      11150       3514        2.52126        no             
 list:      3721        1379        2.96479        no             
 Excl:      1029744     72617       0.564156       no             
 tech:      426754      145403      2.72575        no             
 poem:      481861      196109      3.25586        no             
 fax:       513216      49740       0.775346       no             
 SPRC:      38240       13253       2.77259        no             
 man:       4227        1857        3.51455        no             
 average: 2.53711
 time: 4.641sec
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      35687       2.566          no             
 book1:     768771      313140      3.2586         no             
 book2:     610856      210661      2.7589         no             
 geo:       102400      61070       4.77109        no             
 news:      377109      143307      3.04012        no             
 obj1:      21504       11004       4.09375        no             
 obj2:      246814      83289       2.69965        no             
 paper1:    53161       19433       2.9244         no             
 paper2:    82199       30671       2.98505        no             
 pic:       513216      49740       0.775346       no             
 progc:     39611       14142       2.85618        no             
 progl:     71646       17196       1.92011        no             
 progp:     49379       12045       1.95144        no             
 trans:     93695       19849       1.69478        no             
 average: 2.73539
 time: 4.89sec
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           6           48             no             
 aaa:       100000      58          0.00464        no             
 alphabet:  100000      87          0.00696        no             
 random:    100000      77815       6.2252         no             
 average: 13.5592
 time: 235ms
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     1349400     2.32721        no             
 bible:     4047392     1206327     2.3844         no             
 word:      2473400     703195      2.27442        no             
 average: 2.32868
 time: 8.75sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_2a.xml
+++ b/docs/docs/kernel_2a.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_2a</title>
   <body from_file="kernel_2a.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/kernel_3a.txt
+++ b/docs/docs/kernel_3a.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      118620      6.2395         no             
 play:      125179      103761      6.63121        no             
 html:      24603       14067       4.57408        no             
 Csrc:      11150       5805        4.16502        no             
 list:      3721        2142        4.60521        no             
 Excl:      1029744     390978      3.03748        no             
 tech:      426754      310347      5.81782        no             
 poem:      481861      435150      7.22449        no             
 fax:       513216      116298      1.81285        no             
 SPRC:      38240       23076       4.82762        no             
 man:       4227        3177        6.01278        no             
 average: 4.99528
 time: 547ms
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      68949       4.95764        no             
 book1:     768771      683415      7.11177        no             
 book2:     610856      435186      5.69936        no             
 geo:       102400      105111      8.2118         no             
 news:      377109      266382      5.65103        no             
 obj1:      21504       15714       5.84598        no             
 obj2:      246814      139671      4.52717        no             
 paper1:    53161       37476       5.63962        no             
 paper2:    82199       63198       6.15073        no             
 pic:       513216      116298      1.81285        no             
 progc:     39611       25398       5.12948        no             
 progl:     71646       31905       3.56252        no             
 progp:     49379       20943       3.39302        no             
 trans:     93695       34056       2.90782        no             
 average: 5.04291
 time: 610ms
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           9           72             no             
 aaa:       100000      3771        0.30168        no             
 alphabet:  100000      486         0.03888        no             
 random:    100000      112491      8.99928        no             
 average: 20.335
 time: 47ms
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     4752396     8.1961         no             
 bible:     4047392     2649303     5.23656        no             
 word:      2473400     1452177     4.69694        no             
 average: 6.0432
 time: 2.5sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_3a.xml
+++ b/docs/docs/kernel_3a.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_3a</title>
   <body from_file="kernel_3a.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/kernel_3b.txt
+++ b/docs/docs/kernel_3b.txt
 <text>
 	The Canterbury Corpus
 file      size      packed size      bpb         corruption
 text:      152089      111537      5.86693        no             
 play:      125179      101457      6.48396        no             
 html:      24603       13914       4.52433        no             
 Csrc:      11150       5760        4.13274        no             
 list:      3721        2160        4.64391        no             
 Excl:      1029744     407466      3.16557        no             
 tech:      426754      291483      5.46419        no             
 poem:      481861      417897      6.93805        no             
 fax:       513216      114138      1.77918        no             
 SPRC:      38240       23184       4.85021        no             
 man:       4227        3159        5.97871        no             
 average: 4.89343
 time: 734ms
 	The Calgary Corpus
 file      size      packed size      bpb         corruption
 bib:       111261      63729       4.58231        no             
 book1:     768771      655227      6.81844        no             
 book2:     610856      409392      5.36155        no             
 geo:       102400      108099      8.44523        no             
 news:      377109      259065      5.49581        no             
 obj1:      21504       15768       5.86607        no             
 obj2:      246814      138564      4.49128        no             
 paper1:    53161       35901       5.40261        no             
 paper2:    82199       60291       5.86781        no             
 pic:       513216      114138      1.77918        no             
 progc:     39611       24984       5.04587        no             
 progl:     71646       31113       3.47408        no             
 progp:     49379       20772       3.36532        no             
 trans:     93695       33093       2.82559        no             
 average: 4.9158
 time: 907ms
 	The Artificial Corpus
 file      size      packed size      bpb         corruption
 a:         1           9           72             no             
 aaa:       100000      3771        0.30168        no             
 alphabet:  100000      486         0.03888        no             
 random:    100000      112509      9.00072        no             
 average: 20.3353
 time: 78ms
 	The Large Corpus 
 file      size      packed size      bpb         corruption
 E.coli:    4638690     4747257     8.18724        no             
 bible:     4047392     2466675     4.87558        no             
 word:      2473400     1301805     4.21058        no             
 average: 5.7578
 time: 3.25sec
 </text>
\ No newline at end of file
--- a/docs/docs/kernel_3b.xml
+++ b/docs/docs/kernel_3b.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>kernel_3b</title>
   <body from_file="kernel_3b.txt"/>
   <menu from_file="compression.xml"/>
 </doc>
--- a/docs/docs/license.xml
+++ b/docs/docs/license.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>License</title>
   <body><pre>
 Boost Software License - Version 1.0 - August 17th, 2003
 Permission is hereby granted, free of charge, to any person or organization
 obtaining a copy of the software and accompanying documentation covered by
 this license (the "Software") to use, reproduce, display, distribute,
 execute, and transmit the Software, and to prepare derivative works of the
 Software, and to permit third-parties to whom the Software is furnished to
 do so, all subject to the following:
 The copyright notices in the Software and this entire statement, including
 the above license grant, this restriction and the following disclaimer,
 must be included in all copies of the Software, in whole or in part, and
 all derivative works of the Software, unless such copies or derivative
 works are solely in the form of machine-executable object code generated by
 a source language processor.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
   </pre></body>
 </doc>
--- a/docs/docs/network.xml
+++ b/docs/docs/network.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>Networking</title>
   <!-- ************************************************************************* -->
   <body>
      <br/><br/>
      <p>
      To use any of these objects all you need to do is #include the file indicated in the 
      short section about the component you would like to use. Pick which implementation you 
      would like and typedef it to something nice. Here is an example of creating a typedef for 
      a linker using the first kernel implementation. <br/>
      <tt>typedef dlib::linker::kernel_1a linker1;</tt> 
      </p>
   </body>
   <!-- ************************************************************************* -->
   <menu width="150">
      <top>
         <section>
            <name>Objects</name>
            <item>linker</item> 
            <item>server</item> 
            <item>sockstreambuf</item> 
         </section>
      </top>
   </menu>
   <!-- ************************************************************************* -->
   <!-- ************************************************************************* -->
   <!-- ************************************************************************* -->
   <components>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>linker</name>
         <file>dlib/linker.h</file>
         <spec_file>dlib/linker/linker_kernel_abstract.h</spec_file>
         <description>
            This object represents something that takes two connections and lets
            them talk to each other.  ie. any incoming data from one connection is
            passed unaltered to the other and vice versa.         
         </description>
         <implementations>
            <implementation>
               <name>linker_kernel_1</name>
               <file>dlib/linker/linker_kernel_1.h</file>
               <description> 
                  This implementation is done just using the objects defined in the 
                  <a href="api.html#sockets">sockets</a> and <a href="api.html#threads">threads</a> packages.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for linker_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>server</name>
         <file>dlib/server.h</file>
         <spec_file>dlib/server/server_kernel_abstract.h</spec_file>
         <description>
                This object represents a server that listens on a port and spawns new
                threads to handle each new connection. It also manages the connections
                and threads for you.
         </description>
         <examples>
            <example>sockets_ex.cpp.html</example>
            <example>sockstreambuf_ex.cpp.html</example>
            <example>server_http_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>server_kernel_1</name>
               <file>dlib/server/server_kernel_1.h</file>
               <description> 
                  This implementation is done using the objects defined in the 
                  <a href="api.html#sockets">sockets</a> and <a href="api.html#threads">threads</a> packages.
                  It also uses a <a href="containers.html#set">set</a> to keep track of the connections.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for server_kernel_1 that uses set_kernel_1a</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
         <extensions>
            <extension>
               <name>iostream</name>
               <spec_file>dlib/server/server_iostream_abstract.h</spec_file>
               <description> 
                This extension redefines the on_connect() function so that
                instead of giving you a connection object you get an istream 
                and ostream object.
               </description> 
               <implementations>
                  <implementation>
                     <name>server_iostream_1</name>
                     <file>dlib/server/server_iostream_1.h</file>
                     <description> 
                        This is implemented in the obvious way using the <a href="#sockstreambuf">sockstreambuf</a> object.
                     </description> 
                     <typedefs>
                        <typedef>
                           <name>iostream_1a</name>
                           <description>is a typedef for server_kernel_1a extended by server_iostream_1 that uses
                              sockstreambuf_kernel_2a</description>
                        </typedef>
                     </typedefs>                
                  </implementation> 
               </implementations>
            </extension>
            <extension>
               <name>http</name>
               <spec_file>dlib/server/server_http_abstract.h</spec_file>
               <description> 
                This extension turns the server object into a simple HTTP server.
               </description> 
               <examples>
                  <example>server_http_ex.cpp.html</example>
               </examples>
               <implementations>
                  <implementation>
                     <name>server_http_1</name>
                     <file>dlib/server/server_http_1.h</file>
                     <description> 
                        This is implemented in the obvious way.
                     </description> 
                     <typedefs>
                        <typedef>
                           <name>http_1a</name>
                           <description>is a typedef for server_iostream_1a extended by server_http_1 </description>
                        </typedef>
                     </typedefs>                
                  </implementation> 
               </implementations>
            </extension>
         </extensions>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>sockstreambuf</name>
         <file>dlib/sockstreambuf.h</file>
         <spec_file>dlib/sockstreambuf/sockstreambuf_kernel_abstract.h</spec_file>
         <description>
            This object represents a stream buffer for connection objects.
         </description>
         <examples>
            <example>sockstreambuf_ex.cpp.html</example>
            <example>sockets_ex_2.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>sockstreambuf_kernel_1</name>
               <file>dlib/sockstreambuf/sockstreambuf_kernel_1.h</file>
               <description> 
                  This implementation is done in the obvious way without any sort of buffering. 
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for sockstreambuf_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
            <implementation>
               <name>sockstreambuf_kernel_2</name>
               <file>dlib/sockstreambuf/sockstreambuf_kernel_2.h</file>
               <description> 
                  This implementation is done in the obvious way but <i>with</i> buffering.  Thus, it is
                  considerably faster than the unbuffered version of this object.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_2a</name>
                     <description>is a typedef for sockstreambuf_kernel_2</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
   </components>
   <!-- ************************************************************************* -->
 </doc>
--- a/docs/docs/old_change_log.xml
+++ b/docs/docs/old_change_log.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>Old Change Logs</title>
   <body from_file="old_svnlog.txt"/>
 </doc>
--- a/docs/docs/other.xml
+++ b/docs/docs/other.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>Miscellaneous</title>
   <!-- ************************************************************************* -->
   <body>
      <br/><br/>
         <p>
         This page documents library components that don't really fit in anywhere else.  
         They all basically follow the same conventions as 
         the rest of the library.   So to get a pipe for example you would need to write something 
         like <tt>typedef dlib::pipe::kernel_1a pipe_type;</tt> and from then on make your pipes like 
         <tt>pipe_type my_pipe(pipe_size);</tt>.  
         </p>
   </body>
   <!-- ************************************************************************* -->
   <menu width="200">
    <top>
      <section>
         <name>Objects</name>
         <item>bit_stream</item> 
         <item>byte_orderer</item>
         <item>std_allocator</item> 
         <item>memory_manager</item> 
         <item>memory_manager_global</item> 
         <item>memory_manager_stateless</item> 
         <item>sync_extension</item> 
         <item>timer</item> 
         <item>timeout</item> 
         <item>member_function_pointer</item>
         <item>error</item>
         <item>pipe</item>
         <item>copy_functor</item>
         <item>logger</item>
         <item>uint64</item>
         <item>uint32</item>
         <item>uint16</item>
         <item>uint8</item>
      </section>
      <section>
         <name>Global Functions</name>
         <item>deserialize</item> 
         <item>serialize</item> 
         <item>zero_extend_cast</item> 
      </section>
      <section>
         <name>Testing</name>
         <item>dlib_testing_suite</item>
      </section>
    </top>  
   </menu>
   <!-- ************************************************************************* -->
   <!-- ************************************************************************* -->
   <!-- ************************************************************************* -->
   <components>
   <!-- ************************************************************************* -->
      <component>
         <name>zero_extend_cast</name>
         <file>dlib/uintn.h</file>
         <spec_file link="true">dlib/uintn.h</spec_file>
         <description>
            This is a global function that performs a zero extending cast
            from one integral type to another integral type.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>uint32</name>
         <file>dlib/uintn.h</file>
         <spec_file link="true">dlib/uintn.h</spec_file>
         <description>
            This is just a typedef for a 32 bit unsigned integer.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>uint8</name>
         <file>dlib/uintn.h</file>
         <spec_file link="true">dlib/uintn.h</spec_file>
         <description>
            This is just a typedef for an 8 bit unsigned integer.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>uint16</name>
         <file>dlib/uintn.h</file>
         <spec_file link="true">dlib/uintn.h</spec_file>
         <description>
            This is just a typedef for a 16 bit unsigned integer.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>std_allocator</name>
         <file>dlib/std_allocator.h</file>
         <spec_file>dlib/std_allocator.h</spec_file>
         <description>
                This object is an implementation of an allocator that conforms to the C++ standard 
                requirements for allocator objects.  The M template argument is one of the dlib
                memory manager objects and this allocator implementation will do all of its memory allocations
                using whatever dlib memory manager you supply.   
                  <p>
                Thus, using this allocator object you can use any of the dlib memory manager objects with
                the containers in the STL or with any other object that requires an STL style allocator object.
                  </p>
         </description>
         <examples>
            <example>std_allocator_ex.cpp.html</example>
         </examples>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>uint64</name>
         <file>dlib/uintn.h</file>
         <spec_file link="true">dlib/uintn.h</spec_file>
         <description>
            This is just a typedef for a 64 bit unsigned integer.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>copy_functor</name>
         <file>dlib/algs.h</file>
         <spec_file link="true">dlib/algs.h</spec_file>
         <description>
            This is a templated function object that makes coppies of something. 
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>logger</name>
         <file>dlib/logger.h</file>
         <spec_file>dlib/logger/logger_kernel_abstract.h</spec_file>
         <description>
                This component is a logging output stream in the style of the log4j
                logger available for Java.                  
                Note that unlike most other objects in this library there is only 
                one implementation.  Thus, to create instances 
                of the logger you would simply write logger my_logger("some_name");.
         </description>
         <examples>
            <example>logger_ex.cpp.html</example>
            <example>logger_ex_2.cpp.html</example>
            <example>pipe_ex.cpp.html</example>
         </examples>
         <extensions>
            <extension>
               <name>extra_logger_headers</name>
               <spec_file>dlib/logger/extra_logger_headers.h</spec_file>
               <description>This extension contains additional logger headers you may chose to use instead of the
                  default one. </description>
            </extension>
            <extension>
               <name>config_file</name>
               <spec_file>dlib/logger/logger_config_file.h</spec_file>
               <description>This extension provides the configure_loggers_from_file() function
               which reads a configuration file from disk that sets up all your loggers.</description>
            </extension>
         </extensions>              
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>error</name>
         <file>dlib/error.h</file>
         <spec_file link="true">dlib/error.h</spec_file>
         <description>
            This is the base exception class from which all exceptions in this 
            library inherit.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>pipe</name>
         <file>dlib/pipe.h</file>
         <spec_file>dlib/pipe/pipe_kernel_abstract.h</spec_file>
         <description>
                This is a first in first out queue with a fixed maximum size containing items 
                of type T.  It is suitable for passing objects between threads.
         </description>
         <examples>
            <example>pipe_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>pipe_kernel_1</name>
               <file>dlib/pipe/pipe_kernel_1.h</file>
               <description> 
                  This implementation is done using a circular buffer in the obvious way. See the source for details.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for pipe_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>member_function_pointer</name>
         <file>dlib/member_function_pointer.h</file>
         <spec_file>dlib/member_function_pointer/member_function_pointer_kernel_abstract.h</spec_file>
         <description>
            This object represents a member function pointer.  It is useful because
            instances of this object can be created without needing to know the type
            of object whose member function we will be calling.
         </description>
         <examples>
            <example>member_function_pointer_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>member_function_pointer_kernel_1</name>
               <file>dlib/member_function_pointer/member_function_pointer_kernel_1.h</file>
               <description> 
                  This implementation is done using virtual functions in the obvious way (sorta).
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for member_function_pointer_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>bit_stream</name>
         <file>dlib/bit_stream.h</file>
         <spec_file>dlib/bit_stream/bit_stream_kernel_abstract.h</spec_file>
         <description>
            This object represents a middle man between a user and the iostream classes that allows single
             bits to be read/written easily from/to the iostream classes         
         </description>
         <implementations>
            <implementation>
               <name>bit_stream_kernel_1</name>
               <file>dlib/bit_stream/bit_stream_kernel_1.h</file>
               <description> 
                  This implementation is done by buffering single bits in the obvious way.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for bit_stream_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
         <extensions>
            <extension>
               <name>bit_stream_multi</name>
               <spec_file>dlib/bit_stream/bit_stream_multi_abstract.h</spec_file>
               <description>This extension gives a bit_stream object the ability to read/write multible bits at a time.</description>
               <implementations>
                  <implementation>
                     <name>bit_stream_multi_1</name>
                     <file>dlib/bit_stream/bit_stream_multi_1.h</file>
                     <description>This implementation is done by calling the read/write functions in the bit_stream kernel.</description>
                     <typedefs>
                        <typedef>
                           <name>multi_1a</name>
                           <description>is a typedef for bit_stream_kernel_1 extended by bit_stream_multi_1</description>
                        </typedef>
                     </typedefs>
                  </implementation>
               </implementations>
            </extension>
         </extensions>              
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>byte_orderer</name>
         <file>dlib/byte_orderer.h</file>
         <spec_file>dlib/byte_orderer/byte_orderer_kernel_abstract.h</spec_file>
         <description>
            This object provides a simple type safe mechanism to convert data 
                to and from network and host byte orders.  I.e. to convert things
                between big and little endian byte ordering.
         </description>
         <implementations>
            <implementation>
               <name>byte_orderer_kernel_1</name>
               <file>dlib/byte_orderer/byte_orderer_kernel_1.h</file>
               <description> 
                  This implementation is done in the obvious way.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for byte_orderer_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation>                                  
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>memory_manager_stateless</name>
         <file>dlib/memory_manager_stateless.h</file>
         <spec_file>dlib/memory_manager_stateless/memory_manager_stateless_kernel_abstract.h</spec_file>
         <description>
                This object represents some kind of stateless memory manager or memory pool.  
                Stateless means that all instances (instances of the same type that is) 
                of this object are identical and can be used interchangably.  Note that 
                implementations are allowed to have some shared global state such as a 
                global memory pool.  This object is also thread safe.
         </description>
         <implementations>
            <implementation>
               <name>memory_manager_stateless_kernel_1</name>
               <file>dlib/memory_manager_stateless/memory_manager_stateless_kernel_1.h</file>
               <description> 
                  This implementation just calls new and delete.  So it doesn't do anything special.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for memory_manager_stateless_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
            <implementation>
               <name>memory_manager_stateless_kernel_2</name>
               <file>dlib/memory_manager_stateless/memory_manager_stateless_kernel_2.h</file>
               <description> 
                  This implementation uses a global instance of a <a href="#memory_manager">memory_manager</a> object
                  guarded by a mutex as its implementation.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_2_1a</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_1a</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_1b</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_1b</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_1c</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_1c</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_1d</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_1d</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_1e</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_1e</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_1f</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_1f</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_2a</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_2a</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_2b</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_2b</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_2c</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_2c</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_2d</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_2d</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_2e</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_2e</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_3a</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_3a</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_3b</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_3b</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_3c</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_3c</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_3d</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_3d</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2_3e</name>
                     <description>is a typedef for memory_manager_stateless_kernel_2 that uses memory_manager_3e</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>memory_manager_global</name>
         <file>dlib/memory_manager_global.h</file>
         <spec_file>dlib/memory_manager_global/memory_manager_global_kernel_abstract.h</spec_file>
         <description>
                This object represents some kind of global memory manager or memory pool.  
         </description>
         <implementations>
            <implementation>
               <name>memory_manager_global_kernel_1</name>
               <file>dlib/memory_manager_global/memory_manager_global_kernel_1.h</file>
               <description> 
                  This is implemented in the obvious way.  See the code for details.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for memory_manager_global_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>memory_manager</name>
         <file>dlib/memory_manager.h</file>
         <spec_file>dlib/memory_manager/memory_manager_kernel_abstract.h</spec_file>
         <description>
                This object represents a memory pool. 
         </description>
         <implementations>
            <implementation>
               <name>memory_manager_kernel_1</name>
               <file>dlib/memory_manager/memory_manager_kernel_1.h</file>
               <description> 
                  This memory manager implementation allocates objects one at a time when there are
                  allocation requests.  Then when there is a deallocate request the returning object
                  is placed into a list of free blocks if that list has less than max_pool_size 
                  blocks in it.  Subsequent allocation requests will be serviced by drawing from the
                  free list whenever it isn't empty.  Array allocations, on the other hand, are not 
                  managed at all but are passed directly on to new and delete.
               <p>
                  When this object's max_pool_size template parameter is set to 0 it simply calls
                  new and delete directly and doesn't function as a memory pool.  
               </p>
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for memory_manager_kernel_1 with a max_pool_size of 0</description>
                  </typedef>
                  <typedef>
                     <name>kernel_1b</name>
                     <description>is a typedef for memory_manager_kernel_1 with a max_pool_size of 10</description>
                  </typedef>
                  <typedef>
                     <name>kernel_1c</name>
                     <description>is a typedef for memory_manager_kernel_1 with a max_pool_size of 100</description>
                  </typedef>
                  <typedef>
                     <name>kernel_1d</name>
                     <description>is a typedef for memory_manager_kernel_1 with a max_pool_size of 1000</description>
                  </typedef>
                  <typedef>
                     <name>kernel_1e</name>
                     <description>is a typedef for memory_manager_kernel_1 with a max_pool_size of 10000</description>
                  </typedef>
                  <typedef>
                     <name>kernel_1f</name>
                     <description>is a typedef for memory_manager_kernel_1 with a max_pool_size of 100000</description>
                  </typedef>
               </typedefs>                
            </implementation> 
            <implementation>
               <name>memory_manager_kernel_2</name>
               <file>dlib/memory_manager/memory_manager_kernel_2.h</file>
               <description> 
                This memory manager implementation allocates memory in blocks of chunk_size*sizeof(T)
                bytes.  All the sizeof(T) subblocks are kept in a linked list of free memory blocks
                and are given out whenever an allocation request occurs.  Also, memory is not freed
                until this object is destructed.  
                Also note that array allocations are not managed at all but are passed directly 
                on to new and delete.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_2a</name>
                     <description>is a typedef for memory_manager_kernel_2 with a chunk_size of 10</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2b</name>
                     <description>is a typedef for memory_manager_kernel_2 with a chunk_size of 100</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2c</name>
                     <description>is a typedef for memory_manager_kernel_2 with a chunk_size of 1000</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2d</name>
                     <description>is a typedef for memory_manager_kernel_2 with a chunk_size of 10000</description>
                  </typedef>
                  <typedef>
                     <name>kernel_2e</name>
                     <description>is a typedef for memory_manager_kernel_2 with a chunk_size of 100000</description>
                  </typedef>
               </typedefs>                
            </implementation> 
            <implementation>
               <name>memory_manager_kernel_3</name>
               <file>dlib/memory_manager/memory_manager_kernel_3.h</file>
               <description> 
                This memory manager implementation allocates memory in blocks of chunk_size*sizeof(T)
                bytes.  All the sizeof(T) subblocks are kept in a linked list of free memory blocks
                and are given out whenever an allocation request occurs.  Note that array allocations 
                are managed.  So this object is just like kernel_2 but it also pools memory from 
                array allocations (chunk_size has no effect with respect to array allocations, each array
                is allocated one at a time). 
                Also, memory is not freed until this object is destructed.  
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_3a</name>
                     <description>is a typedef for memory_manager_kernel_3 with a chunk_size of 10</description>
                  </typedef>
                  <typedef>
                     <name>kernel_3b</name>
                     <description>is a typedef for memory_manager_kernel_3 with a chunk_size of 100</description>
                  </typedef>
                  <typedef>
                     <name>kernel_3c</name>
                     <description>is a typedef for memory_manager_kernel_3 with a chunk_size of 1000</description>
                  </typedef>
                  <typedef>
                     <name>kernel_3d</name>
                     <description>is a typedef for memory_manager_kernel_3 with a chunk_size of 10000</description>
                  </typedef>
                  <typedef>
                     <name>kernel_3e</name>
                     <description>is a typedef for memory_manager_kernel_3 with a chunk_size of 100000</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>sync_extension</name>
         <file>dlib/sync_extension.h</file>
         <spec_file>dlib/sync_extension/sync_extension_kernel_abstract.h</spec_file>
         <description>
                This object represents a general extension to any object.  This object gives any object which it extends 
                an integrated rmutex and rsignaler object.  The extended object will 
                then be able to be treated as if it was also a <a href="dlib/threads/rmutex_extension_abstract.h.html#rmutex">rmutex</a> and 
                <a href="dlib/threads/rsignaler_extension_abstract.h.html#rsignaler">rsignaler</a>.
         </description>
         <implementations>
            <implementation>
               <name>sync_extension_kernel_1</name>
               <file>dlib/sync_extension/sync_extension_kernel_1.h</file>
               <description> 
                  This is implemented using a <a href="dlib/threads/rmutex_extension_abstract.h.html#rmutex">rmutex</a> 
                  and <a href="dlib/threads/rsignaler_extension_abstract.h.html#rsignaler">rsignaler</a> in the obvious way.  
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for sync_extension_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>timeout</name>
         <file>dlib/timeout.h</file>
         <spec_file>dlib/timeout/timeout_kernel_abstract.h</spec_file>
         <description>
            This object provides a simple way to implement a timeout. 
         </description>
         <implementations>
            <implementation>
               <name>timeout_kernel_1</name>
               <file>dlib/timeout/timeout_kernel_1.h</file>
               <description> 
                  This is implemented in the obvious way using virtual functions and templates.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for timeout_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>timer</name>
         <file>dlib/timer.h</file>
         <spec_file>dlib/timer/timer_kernel_abstract.h</spec_file>
         <description>
                This object represents a timer that will call a given member function 
                repeatedly at regular intervals.
         </description>
         <examples>
            <example>timer_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>timer_kernel_1</name>
               <file>dlib/timer/timer_kernel_1.h</file>
               <description> 
                  This is implemented in the obvious way.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for timer_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
            <implementation>
               <name>timer_kernel_2</name>
               <file>dlib/timer/timer_kernel_2.h</file>
               <description> 
                  This implemenation has a single master thread that does all the waiting.
                  This master thread creates and dispatches threads to specific timer objects
                  when they need to run their action functions.  When a timer object isn't executing 
                  its action function then it doesn't have any thread allocated to it at all.  So
                  it is much more efficient than timer_kernel_1.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_2a</name>
                     <description>is a typedef for timer_kernel_2</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>deserialize</name>
         <file>dlib/serialize.h</file>
         <spec_file>dlib/serialize.h</spec_file>
         <description>
            This is actually a set of overloaded functions which provide the ability to restore an object's state
            from an input stream.  Currently all dlib container classes, non pointer C++ intrinsics, std::string, 
            std::vector, std::map, std::complex, dlib::bigint, dlib::uint64, C style arrays, and dlib::vector objects are serializable.  
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>serialize</name>
         <file>dlib/serialize.h</file>
         <spec_file>dlib/serialize.h</spec_file>
         <description>
            This is actually a set of overloaded functions which provide the ability to save an object's state
            to an output stream.  Currently all dlib container classes, non pointer C++ intrinsics, std::string, 
            std::vector, std::map, std::complex, dlib::bigint, dlib::uint64, C style arrays, and dlib::vector objects are serializable.   
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>dlib_testing_suite</name>
         <description>
      <p>
      This library comes with a command line driven regression test suite.  All the testing code
      is located in the <chm>dlib/test</chm><web><a href="dlib/test">dlib/test</a></web> folder.  If you want to build it and test the library on your 
      system you can use the makefile at <a href="dlib/test/makefile">dlib/test/makefile</a> (you may
      have to edit it to make it work on your system) or use the CMake CMakeLists.txt file at 
      <a href="dlib/test/CMakeLists.txt.html">dlib/test/CMakeLists.txt</a> to build it.  
      </p>
      <p>
         What you may find more useful however is the testing framework itself.  It uses a faily simple
         and modular design.  Each test is contained in its own cpp file and when compiled into the
         program it automatically shows up in the list of tests to run.  If you want to use the
         testing framework all you need to do is add the files <a href="dlib/test/tester.h.html">dlib/test/tester.h</a>,
         <a href="dlib/test/tester.cpp.html">dlib/test/tester.cpp</a>, and <a href="dlib/test/main.cpp.html">dlib/test/main.cpp</a>
         to your project and then add cpp files that contain your tests (see 
         <a href="dlib/test/example.cpp.html">dlib/test/example.cpp</a> and 
         <a href="dlib/test/example_args.cpp.html">dlib/test/example_args.cpp</a> 
         for some examples).
      </p>
      <p>
         From the command line you can choose to run all the installed tests, enable or disable the loggers, 
         set various logging levels, specify how many times to run the tests, or pick just one or two tests
         to run at a time rather than the entire suite.
      </p>
         </description>
      </component>
   <!-- ************************************************************************* -->
   </components>
   <!-- ************************************************************************* -->
 </doc>
--- a/docs/docs/parsing.xml
+++ b/docs/docs/parsing.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>Parsing</title>
   <!-- ************************************************************************* -->
   <body>
      <br/><br/>
      <p>
      This page documents the objects and functions that in some way deal with parsing or otherwise 
      manipulating text.  
      Everything here follows the same conventions as the rest of the library.
      </p>
   </body>
   <!-- ************************************************************************* -->
   <menu width="150">
    <top>
      <section>
         <name>Objects</name>
         <item>cmd_line_parser</item> 
         <item>config_reader</item> 
         <item>cpp_pretty_printer</item> 
         <item>cpp_tokenizer</item> 
         <item>tokenizer</item> 
         <item>xml_parser</item> 
         <item>base64</item>
         <item>unichar</item>
         <item>ustring</item>
         <item>basic_utf8_ifstream</item>
      </section>
      <section>
         <name>Global Functions</name>
         <item>string_cast</item>
         <item>cast_to_string</item>
         <item>cast_to_wstring</item>
         <item>wrap_string</item>
         <item>narrow</item> 
         <item>trim</item> 
         <item>ltrim</item> 
         <item>rtrim</item> 
         <item>pad</item> 
         <item>lpad</item> 
         <item>rpad</item> 
         <item>left_substr</item> 
         <item>right_substr</item> 
         <item>tolower</item> 
         <item>toupper</item> 
         <item>convert_utf8_to_utf32</item> 
         <item>is_combining_char</item> 
      </section>
    </top>
   </menu>
   <!-- ************************************************************************* -->
   <!-- ************************************************************************* -->
   <!-- ************************************************************************* -->
   <components>
   <!-- ************************************************************************* -->
      <component>
         <name>toupper</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to convert a string to all uppercase.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>tolower</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to convert a string to all lowercase.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>right_substr</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to return the part of a string to the right of a user supplied delimiter.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>left_substr</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to return the part of a string to the left of a user supplied delimiter.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>rpad</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to pad whitespace (or user specfied characters) onto the right most end of a string.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>lpad</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to pad whitespace (or user specfied characters) onto the left most end of a string.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>pad</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to pad whitespace (or user specfied characters) onto the ends of a string.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>rtrim</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to remove the whitespace (or user specfied characters) from the right most end of a string.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>ltrim</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to remove the whitespace (or user specfied characters) from the left most end of a string.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>trim</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function to remove the whitespace (or user specfied characters) from the ends of a string.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>narrow</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>
            This is a function for converting a string of type std::string or std::wstring 
    to a plain std::string. 
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>wrap_string</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>        
            wrap_string is a function that takes a string and breaks it into a number of
            lines of a given length.  You can use this to make a string
            fit nicely into a command prompt window for example.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>cast_to_wstring</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>        
            cast_to_string is a templated function which makes it easy to convert arbitrary objects to 
            std::wstring strings.  The types supported are any types that can be written to std::wostream via 
            operator&lt;&lt;.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>cast_to_string</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>        
            cast_to_string is a templated function which makes it easy to convert arbitrary objects to 
            std::string strings.  The types supported are any types that can be written to std::ostream via 
            operator&lt;&lt;.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>string_cast</name>
         <file>dlib/string.h</file>
         <spec_file link="true">dlib/string/string_abstract.h</spec_file>
         <description>        
            string_cast is a templated function which make it easy to convert strings to 
            other types.  The types supported are any types that can be read by the basic_istream operator>>.  It
            also supports casting between wstring, string, and ustring objects.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>unichar</name>
         <file>dlib/unicode.h</file>
         <spec_file link="true">dlib/unicode/unicode_abstract.h</spec_file>
         <description>        
            This is a typedef for an unsigned 32bit integer which we use to store
            Unicode values.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>basic_utf8_ifstream</name>
         <file>dlib/unicode.h</file>
         <spec_file link="true">dlib/unicode/unicode_abstract.h</spec_file>
         <description>        
                This object represents an input file stream much like the
                normal std::ifstream except that it knows how to read UTF-8 
                data.  So when you read characters out of this stream it will
                automatically convert them from the UTF-8 multibyte encoding
                into a fixed width wide character encoding.
               <p>
                  There are also two typedefs of this object.  The first is utf8_wifstream which is a
                  typedef for wchar_t as the wide character to read into.  The second is utf8_uifstream 
                  which uses unichar instead of wchar_t.
               </p>
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>ustring</name>
         <file>dlib/unicode.h</file>
         <spec_file link="true">dlib/unicode/unicode_abstract.h</spec_file>
         <description>        
            This is a typedef for a std::basic_string&lt;unichar&gt;.  That is, it is a typedef
            for a string object that stores unichar Unicode characters. 
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>is_combining_char</name>
         <file>dlib/unicode.h</file>
         <spec_file link="true">dlib/unicode/unicode_abstract.h</spec_file>
         <description>        
            This is a global function that can tell you if a character is a Unicode 
            combining character or not.
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>convert_utf8_to_utf32</name>
         <file>dlib/unicode.h</file>
         <spec_file link="true">dlib/unicode/unicode_abstract.h</spec_file>
         <description>        
            This is a global function that can convert UTF-8 strings into strings
            of 32bit unichar characters. 
         </description>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>base64</name>
         <file>dlib/base64.h</file>
         <spec_file>dlib/base64/base64_kernel_abstract.h</spec_file>
         <description>
                This object allows you to encode and decode data to and from
                the Base64 Content-Transfer-Encoding defined in section 6.8 of
                rfc2045.
         </description>
         <examples>
            <example>file_to_code_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>base64_kernel_1</name>
               <file>dlib/base64/base64_kernel_1.h</file>
               <description> 
                  This implementation is done using a lookup table in the obvious way.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for base64_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>cmd_line_parser</name>
         <file>dlib/cmd_line_parser.h</file>
         <spec_file>dlib/cmd_line_parser/cmd_line_parser_kernel_abstract.h</spec_file>
         <description>
            This object allows you to easily parse a command line.         
         </description>
         <examples>
            <example>compress_stream_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>cmd_line_parser_kernel_1</name>
               <file>dlib/cmd_line_parser/cmd_line_parser_kernel_1.h</file>
               <description> 
                  This implementation uses the <a href="containers.html#map">map</a> and <a href="containers.html#sequence">sequence</a> 
                  containers to keep track of the command line options and arguments.  For further details see the above link.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for cmd_line_parser_kernel_1 that uses map_kernel_1a and sequence_kernel_2a</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
         <extensions>
            <extension>
               <name>cmd_line_parser_check</name>
               <spec_file>dlib/cmd_line_parser/cmd_line_parser_check_abstract.h</spec_file>
               <description>
                This gives a cmd_line_parser object the ability to easily perform various
                kinds of validation on the command line input.
               </description>
               <implementations>
                  <implementation>
                     <name>cmd_line_parser_check_1</name>
                     <file>dlib/cmd_line_parser/cmd_line_parser_check_1.h</file>
                     <description>This implementation is done in the obvious way.  See the source for details</description>
                     <typedefs>
                        <typedef>
                           <name>check_1a</name>
                           <description>is a typedef for cmd_line_parser_print_1 extended by cmd_line_parser_check_1</description>
                        </typedef>
                     </typedefs>
                  </implementation>
               </implementations>
            </extension>
            <extension>
               <name>cmd_line_parser_print</name>
               <spec_file>dlib/cmd_line_parser/cmd_line_parser_print_abstract.h</spec_file>
               <description>This extension gives a cmd_line_parser object the ability to print its command line options 
               in a nice format.</description>
               <implementations>
                  <implementation>
                     <name>cmd_line_parser_print_1</name>
                     <file>dlib/cmd_line_parser/cmd_line_parser_print_1.h</file>
                     <description>This implementation is done by enumerating the options of the parser and printing them.</description>
                     <typedefs>
                        <typedef>
                           <name>print_1a</name>
                           <description>is a typedef for cmd_line_parser_kernel_1 extended by cmd_line_parser_print_1</description>
                        </typedef>
                     </typedefs>
                  </implementation>
               </implementations>
            </extension>
         </extensions>              
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>config_reader</name>
         <file>dlib/config_reader.h</file>
         <spec_file>dlib/config_reader/config_reader_kernel_abstract.h</spec_file>
         <description>
            This object represents something which is intended to be used to read
                         text configuration files.
         </description>
         <implementations>
            <implementation>
               <name>config_reader_kernel_1</name>
               <file>dlib/config_reader/config_reader_kernel_1.h</file>
               <description> 
                  This implementation is done using the <a href="containers.html#map">map</a> object in the obvious way.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for config_reader_kernel_1 that uses map_kernel_1b</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
         <extensions>
            <extension>
               <name>config_reader_thread_safe</name>
               <spec_file>dlib/config_reader/config_reader_thread_safe_abstract.h</spec_file>
               <description>
                This object extends a normal config_reader by simply wrapping all 
                its member functions inside mutex locks to make it safe to use
                in a threaded program.  
               </description>
               <implementations>
                  <implementation>
                     <name>config_reader_thread_safe_1</name>
                     <file>dlib/config_reader/config_reader_thread_safe_1.h</file>
                     <description>This implementation is done in the obvious way.  See the source for details</description>
                     <typedefs>
                        <typedef>
                           <name>thread_safe_1a</name>
                           <description>is a typedef for config_reader_kernel_1 extended by config_reader_thread_safe_1</description>
                        </typedef>
                     </typedefs>
                  </implementation>
               </implementations>
            </extension>
         </extensions>
      </component>
   <!-- ************************************************************************* -->
      <component>
         <name>cpp_pretty_printer</name>
         <file>dlib/cpp_pretty_printer.h</file>
         <spec_file>dlib/cpp_pretty_printer/cpp_pretty_printer_kernel_abstract.h</spec_file>
         <description>
            This object represents an HTML pretty printer for C++ source code.
         </description>
         <implementations>
            <implementation>
               <name>cpp_pretty_printer_kernel_1</name>
               <file>dlib/cpp_pretty_printer/cpp_pretty_printer_kernel_1.h</file>
               <description> 
                  This is implemented by using the <a href="#cpp_tokenizer">cpp_tokenizer</a> object.  
                  This is the pretty printer I use on all the source in this library.  It applies a color scheme, turns
                  include directives such as #include "file.h" into links to file.h.html and puts HTML anchor points
                  on function and class declarations.  It also looks for comments starting with /*!A and puts an anchor
                  before the comment using the word following the A as the name of the anchor.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for cpp_pretty_printer_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
            <implementation>
               <name>cpp_pretty_printer_kernel_2</name>
               <file>dlib/cpp_pretty_printer/cpp_pretty_printer_kernel_2.h</file>
               <description> 
                  This is implemented by using the <a href="#cpp_tokenizer">cpp_tokenizer</a> object.  
                  It applies a black and white color scheme suitable 
                  for printing on a black and white printer.  It also places the document title 
                  prominently at the top of the pretty printed source file.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_2a</name>
                     <description>is a typedef for cpp_pretty_printer_kernel_2</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>cpp_tokenizer</name>
         <file>dlib/cpp_tokenizer.h</file>
         <spec_file>dlib/cpp_tokenizer/cpp_tokenizer_kernel_abstract.h</spec_file>
         <description>
                This object represents a simple tokenizer for C++ source code. 
         </description>
         <implementations>
            <implementation>
               <name>cpp_tokenizer_kernel_1</name>
               <file>dlib/cpp_tokenizer/cpp_tokenizer_kernel_1.h</file>
               <description> 
                  This is implemented by using the <a href="#tokenizer">tokenizer</a> object in the obvious way. 
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for cpp_tokenizer_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>tokenizer</name>
         <file>dlib/tokenizer.h</file>
         <spec_file>dlib/tokenizer/tokenizer_kernel_abstract.h</spec_file>
         <description>
            This object represents a simple tokenizer for textual data.
         </description>
         <implementations>
            <implementation>
               <name>tokenizer_kernel_1</name>
               <file>dlib/tokenizer/tokenizer_kernel_1.h</file>
               <description> 
                  This is implemented in the obvious way. 
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for tokenizer_kernel_1</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
      <component checked="true">
         <name>xml_parser</name>
         <file>dlib/xml_parser.h</file>
         <spec_file>dlib/xml_parser/xml_parser_kernel_abstract.h</spec_file>
         <description>
                This object represents a simple SAX style event driven XML parser.  
                It takes its input from an input stream object and sends events to all 
                registered document_handler and error_handler objects.
            <br/><br/>
            The xml_parser object also uses the interface classes 
            <a href="dlib/xml_parser/xml_parser_kernel_interfaces.h.html#document_handler">document_handler</a>
            and 
            <a href="dlib/xml_parser/xml_parser_kernel_interfaces.h.html#error_handler">error_handler</a>.
            Subclasses of these classes are passed to the xml_parser which generates events while it's
            parsing and sends them to the appropriate handler.
         </description>
         <examples>
            <example>xml_parser_ex.cpp.html</example>
         </examples>
         <implementations>
            <implementation>
               <name>xml_parser_kernel_1</name>
               <file>dlib/xml_parser/xml_parser_kernel_1.h</file>
               <description> 
                  This implementation is done using a <a href="containers.html#stack">stack</a> (as opposed to recursive descent) to parse
                  xml documents.  It also uses a <a href="containers.html#map">map</a> to implement the attribute_list interface and 
                  internally uses the <a href="containers.html#sequence">sequence</a> object to keep track of all registered document and error
                  handlers.
               </description> 
               <typedefs>
                  <typedef>
                     <name>kernel_1a</name>
                     <description>is a typedef for xml_parser_kernel_1 that uses map_kernel_1a, stack_kernel_1a, and sequence_kernel_2a</description>
                  </typedef>
               </typedefs>                
            </implementation> 
         </implementations>
      </component>
   <!-- ************************************************************************* -->
   </components>
   <!-- ************************************************************************* -->
 </doc>
--- a/docs/docs/release_notes.xml
+++ b/docs/docs/release_notes.xml
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
 <doc>
   <title>Release notes</title>
   <body>
 <release_notes>
 <!-- *******************************************************************************  -->
 <current>
 New Stuff:
   - Added the remove_row and remove_col matrix functions.  Also made all
     three of the above functions capable of taking arguments at run time 
     as well as compile time.
   - Added the ability to cap the number of dictionary vectors used by the krls
     and kcentroid object at a user specified number.  This changes the 
     serialization format of the objects.  
   - Added the pick_initial_centers() function
   - Merged in Keita Mochizuki's unicode patches to the GUI components
   - Added the running_stats object
 Non-Backwards Compatible Changes:
   - Changed the interface to the krls and kcentroid objects somewhat.
   - All of the style objects in the GUI part of the library now use 
     dlib::ustring instead of std::string.  This only matters to you if 
     you have made your own style objects.
 Bug fixes:
   - Fixed an aliasing bug in the set_subm(), set_rowm(), and set_colm() 
     functions.  It was possible that you could get incorrect results
     if you used these functions to copy one part of a matrix to another
     part of the same matrix if the two areas overlapped.
   - Fixed a minor numerical error in the krls code so now it gets slightly 
     better results.
 Other:
   - Made the types generated by the matrix operations a lot shorter.  This
     avoids some compiler warnings from visual studio and even some potential
     internal compiler errors in some instances.
 </current>
 <!-- *******************************************************************************  -->
 <old name="17.5" date="Jun 2, 2008">
 New Stuff:
   - Added some macros that allow dlib to create a stack trace
   - Added the wrap_function and is_function templates.
   - Added two new events to the text_field object.  One for detecting when the 
     user hits enter and another for detecting when input focus is lost.
   - Machine Learning
      - Added a kernel based centroid estimator/novelty detector
      - Added a kernel based k-means clustering algorithm
   - Numerical
      - Added an identity_matrix() function that can take a runtime defined size.
      - Added a bunch of unconstrained optimization stuff to the library. 
        It now has a conjugate gradient optimization algorithm as well as
        a quasi-newton algorithm.
      - Added the set_subm, set_rowm, and set_colm functions.
 Non-Backwards Compatible Changes:
   - In the krls object:  Added a requires clause to the set_tolerance() member 
     function and renamed clear() to clear_dictionary().
 Bug fixes:
   - Fixed a bug in the requires clause of the subm() function.  It was 
     more restrictive than it should have been.
 Other:
   - Added example programs for the krls object as well as the new
     kcentroid and kkmeans objects.
 </old>
 <!-- *******************************************************************************  -->
 <old name="17.4" date="May 12, 2008">
 New Stuff:
   - Added an implementation of the kernel recursive least squares algorithm
 Non-Backwards Compatible Changes:
   - Broke backwards compatability in the directed_graph_drawer's serialization
     format when I fixed the bug below.  
 Bug fixes:
   - Fixed two bugs in the directed_graph_drawer widget.  First, it sometimes 
     threw a dlib::fatal_error due to a race condition.  Second, the color of 
     the nodes wasn't being serialized when save_graph() was called.  
   - Made vector_to_matrix() work for std::vector objects that have non-default 
     allocators.
 Other:
   - Added some stuff to make people get a really obvious error message
     when they set up the include path incorrectly.
 </old>
 <!-- *******************************************************************************  -->
 <old name="17.3" date="Apr 28, 2008">
 New Stuff:
   - Added the vector_to_matrix() function.
   - Added a cholesky_decomposition() function.
   - Added the toggle_button GUI widget
      - Added a default toggle button style as well as check box and 
        radio button styles.
   - Added a single click event to list_box
   - Added a save_file_box() and open_existing_file_box() function.  
 Non-Backwards Compatible Changes:
   - Changed the check_box and radio_button widgets to be specializations of 
     the new toggle_button object.  This is a nearly backwards compatible 
     change except that the events registered to check_box and radio_button 
     clicks must now take the form void event(toggle_button&amp;) or 
     void event(void) instead of the previous void event(check_box&amp;) and 
     void event(radio_button&amp;).
   - Removed the is_mouse_over bool from the button_style::draw_button()
     function.
 Bug fixes:
   - Fixed a compiler error in mingw.
   - Changed the preprocessor checks for the wchar_t overload of 
     is_built_in_scalar_type so that it works properly with visual studio.
 Other:
   - Added a Bayesian Network GUI that allows you to create a network
     and serialize it to disk.
 </old>
 <!-- *******************************************************************************  -->
 <old name="17.2" date="Apr 21, 2008">
 New Stuff:
   - GUI Related
      - Added the scrollable_region widget
      - Added the text_grid widget
      - Added an event to the text_field so you can tell when the
        user modifies it.
      - Added the fit_to_contents() function to the tabbed_display 
        widget.
   - Bayesian Network Related
      - Added the node_first_parent_assignment(), node_next_parent_assignment(), 
        and node_cpt_filled_out() functions.
 Non-Backwards Compatible Changes:
   - Reverted the change in 17.0 where I made drawable::lastx and 
     drawable::lasty not match the current location of the mouse inside
     the on_mouse_move() event.  I changed this back to how it was before,
     so now lastx and lasty represent the most current record of where
     the mouse is in *all* events.
   - Changed the functions that control text color in the label and text_field
     widgets to use rgb_pixel objects.  Also added a function to set the
     background color of a text_field.
 Bug fixes:
   - Fixed a bug in the bayesian_network_join_tree object that caused it to
     compute incorrect results for some networks.
   - GUI Related
      - Fixed a minor bug in the cursor drawing of the text_field
        gui widget.
      - Fixed a bug in the compute_cursor_rect() function.  It would return an
        incorrectly positioned rectangle for 0 length strings.
      - Changed the way wchar_t is handled in the serialize.h file.  Now
        everything should compile correctly in visual studio regardless of how
        you set the /Zc:wchar_t compiler option.
      - Fixed a bug in the menu_bar widget.  One of the members wasn't being 
        initialized when it needed to be.
      - Fixed a bug in the tabbed_display where it didn't redraw itself
        correctly after it was moved by set_pos()
 Other:
   - Changed the xml parser so that it counts line numbers
     from the start of the input stream instead of from the
     root tag.
   - Changed the xml parser so that you will only get the fatal_error
     event once if it occurs. 
 </old>
 <!-- *******************************************************************************  -->
 <old name="17.1" date="Apr 13, 2008">
 New Stuff:
   - Added a zoomable_region widget
   - Added a directed_graph_drawer widget
 Non-Backwards Compatible Changes:
   - Changed the first_pixel argument of the draw_string() function 
     to be a rectangle like all the other draw functions now use.
 Bug fixes:
   - Fixed a bug in the tooltip widget that was triggered when calling
     its member functions without calling set_tooltip_text().  This also 
     fixed a bug in the button object that triggered when calling some button
     functions that referenced the tooltip widget.
   - Fixed a problem in the draw_circle and draw_solid_circle functions.
     They didn't draw themselves quite correctly in all cases.
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="17.0" date="Apr 07, 2008">
 New Stuff:
  - Added a png_loader object
  - GUI related
    - Added a popup_menu widget
    - Added a menu_bar widget
    - Added a tooltip widget
    - Added a user selectable style to the gui button.
    - Added the draw_rounded_rectangle() and fill_gradient_rounded() functions
    - Added the mouse_over_event object to the base_widgets and made the 
      button_action inherit from it.
    - Added the drawable::next_free_user_event_number() function 
  - matrix and geometry:
    - Added a size() function to matrix_exp and matrix_ref objects.
    - Added a class that represents 2D points 
    - Added the following matrix functions:
      - squared(), cubed(), get_rect(), a subm() function that takes 
        rectangles, and normlize() 
    - Added the following rectangle functions:
      - area(), centered_rect(), translate_rect(), move_rect(), resize_rect(),
        resize_rect_height(), resize_rect_width(), and nearest_point() 
 Non-Backwards Compatible Changes:
  - Renamed atom() to array_to_matrix()
  - Moved the rectangle object from the gui_core into a new geometry folder  
    (only matters if you were directly including the rectangle file)
  - Moved the vector object into the geometry folder.  Also removed the kernel_1a
    stuff.  So there is now only one possible vector implementation.
  - Changed the default position for a rectangle to (0,0) instead of (1,1)
  - Added edge data to the directed_graph.  This breaks backwards compatibility 
    with the previous serialization format for directed_graphs.
  - GUI related:
    - Changed the base_window::on_keydown event signature so that it now
      reports more keyboard modifier keys (e.g. alt)
    - Made the functions for drawing on canvas objects take points and pixels 
      instead of just a bunch of integers.  Also changed the order of the
      arguments so that the canvas comes first, followed by the location
      to draw on, then what to draw.
    - Moved the canvas drawing functions into the gui_widgets/canvas_drawing.h 
      file.
    - Modified the drawable_window so that the drawable::lastx and drawable::lasty
      fields are updated after calls to on_mouse_move.  This way the x and y that
      go into the on_mouse_move actually tell you something.
 Bug fixes:
  - Fixed a bug in the floating point serialization code.  It 
    didn't handle NaN or infinities correctly.
  - Fixed a bug in the win32 version of the gui_core component.  It was 
    possible that calling set_size(), set_pos(), or set_title() could cause 
    the program to deadlock.
  - Made the load_bmp() function more robust in the face of weirdly 
    written BMP files.
  - Modified the draw_circle() and draw_solid_circle() functions so that they
    only touch each canvas pixel once.  This avoids messing up alpha blending
    if an rgb_alpha_pixel is used.  
 Other:
  - Removed the old win32 only gui code in the dlib/gui folder. 
  - Changed the default GUI font to a nicer Sans Serif font 
 </old>
 <!-- *******************************************************************************  -->
 <old name="16.5" date="Mar 04, 2008">
 New Stuff:
   - Added another constructor to the thread_function object.  
     Now it can take proper function objects as well as normal function
     pointers.
   - Added the probabilistic_decision_function object and svm_nu_train_prob() 
     function.
 Non-Backwards Compatible Changes:
   - Changed the svm train functions so that the cache_size argument
     now measures the max number of megabytes of memory to use rather
     than number of kernel matrix rows to cache.  It's default
     value is now 200MB.
   - changed the type typedef in the SVM kernel function objects to
     be named sample_type instead of type. 
 Bug fixes:
   - Fixed a bug in the trim, rtrim, and ltrim functions.  They
     didn't return empty strings when the input string contained all
     trim characters.
   - Fixed a bug in the decision_function's copy constructor
 Other:
   - Added an optimization to the working set selection for the svm training code.
     Now the algorithm will prefer to select indices that are in the kernel 
     matrix cache when possible.
   - Fixed a problem with the chm documentation file where many of the links
     didn't work.
   - Made the support vector functions capable of operating with floats, doubles,
     and long doubles instead of just the double type.
 </old>
 <!-- *******************************************************************************  -->
 <old name="16.4" date="Feb 22, 2008">
 New Stuff:
   - Added aversion of the draw_line() function for images.
   - Added the atom(), rowm(), colm(), and subm() matrix functions.
   - Added some push/pop_back() functions to the array object that are similar
     to the ones in the std::vector.
   - Added the std_vector_c class that wraps std::vector and checks its 
     function's preconditions.
   - Added the polynomial_kernel object for use with the svm algorithm.
 Non-Backwards Compatible Changes:
   - Changed the svm_nu_cross_validate() function to return a vector
     of both the +1 and -1 cross validation accuracies.
 Bug fixes:
   - Fixed a bug in the list_box that caused it to not hide itself properly
     when told to do so.
   - Fixed canvas::fill() gui function so that it should work right
     on 64 bit platforms.
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="16.3" date="Feb 12, 2008">
 New Stuff:
   - Added memory manager support to the matrix object.
 Non-Backwards Compatible Changes:
   - Made the assign_pixel() function saturate grayscale values bigger
     than the target pixel type can handle.  Previously it would just 
     truncate the numbers.
   - Removed rand_kernel_1 and rand_kernel_2 because they gave very 
     inferior results compared to rand_kernel_3.  I then renamed
     rand_kernel_3 to rand_kernel_1.
   - Renamed rand::get_random_number() to get_random_8bit_number() and also 
     added a get_random_16bit_number() and get_random_32bit_number()
   - Added a checksum to compress_stream_kernel_1 and kernel_2.  This 
     breaks backwards compatibility with the previous versions.  That is,
     the new implementations will complain that decompression fails if 
     you give them data compressed with the old non-checksum version of
     the compression routines. 
   - Removed the width() and height() functions from the array2d object.  
     Now only the equivalent nc() and nr() member functions remain.
   - Changed array2d::set_size(width,height) to set_size(num_rows, num_cols).  
     That is, I switched the order of the two arguments to this function.
     The reason for doing this is to make it have the same form as the
     set_size() member of the matrix object.  This way the usage of the
     set_size() member for these two very similar data structures is 
     the same.  Hopefully this will reduce confusion rather than 
     make things worse.
 Bug fixes:
   - Fixed a bug in the image_widget.  It didn't repaint the screen
     all the way if you gave it a smaller image to display.
   - Fixed a bug in the cat() function that caused the state of the queue
     to be broken if you called cat with an empty queue.
   - Made the queue_sort_1 use a better sorting algorithm.  In particular, it 
     will not sort slowly for nearly sorted data.
   - Fixed a bug in the queue_kernel_2 object that caused it to not work 
     correctly with the non-default memory managers.
 Other:
   - Added example code for the member_function_pointer as well as the matrix 
     object.
   - Added some more regression tests and made some of the longer running 
     ones execute a lot quicker.
   - Made the unit test suite easier to use.  Now tests just throw an exception 
     to indicate an error rather than returning an error code.
   - Added an example program for the multi-layer perceptron neural network.
 </old>
 <!-- *******************************************************************************  -->
 <old name="16.2" date="Jan 25, 2008">
 New Stuff:
   - Added the is_signed_type and is_unsigned_type templates
   - Image Processing stuff
      - Added the assign_all_pixels() function
      - Added the assign_border_pixels() function
      - Added the assign_pixel_intensity() function
      - Added the auto_threshold_image() function
      - Added the binary_union() function
      - Added the edge_orientation() function
      - Added the get_histogram() function
      - Added the get_pixel_intensity() function
      - Added the hysteresis_threshold() function
      - Added the sobel_edge_detector() function
      - Added the suppress_non_maximum_edges() function
      - Added the zero_border_pixels() function
      - Changed the pixel_traits structure so that it can support 8, 16, and 32 
        bit grayscale pixels. 
 Non-Backwards Compatible Changes:
   - Added more fields to the pixel_traits template so if you had defined your 
     own pixel types you will need to update them.
 Bug fixes:
   - Fixed some compiler errors in Visual Studio 2008
 Other:
   - Generally tried to clean up the documentation and code in this release
 </old>
 <!-- *******************************************************************************  -->
 <old name="16.1" date="Jan 1, 2008">
 New Stuff:
   - Added the randomize_samples() function
   - Added the set_main_font() and main_font() functions to the drawable object.
     So now the drawable widgets can use a user provided font.  
 Non-Backwards Compatible Changes:
   - Made the named_rectangle object a little easier to use.  It now won't
     let you size it so small that it doesn't display its entire name.
 Bug fixes:
   - Fixed a bug in the svm_nu_train() function that caused a crash with 
     some inputs.
   - Fixed a compile time error that occurred when compiling the bayesian
     network code in Mac OS X.
   - Fixed a bug in the compute_cursor_pos() function where it would 
     return the incorrect value.
 Other:
   - Added an example showing how to use the svm functions.
 </old>
 <!-- *******************************************************************************  -->
 <old name="16.0" date="Dec 10, 2007">
 New Stuff:
   - Added the left_substr() and right_substr() functions
   - Added the zero_extend_cast() function
   - Added the unsigned_type template
   - Added the uint8 typedef
   - Bayesian Network related
      - Added the assignment object
      - Added the bayes_node object
      - Added the joint_probability_table object
      - Added the conditional_probability_table object
      - Added the bayesian_network_gibbs_sampler object
        This object implements an algorithm that performs approximate inference
        in a Bayesian Network.
      - Added the bayesian_network_join_tree object
        This object implements an algorithm that performs exact inference
        in a Bayesian Network.
   - Set related
      - Added the set_intersection_size() function
      - Added the set_union() function
      - Added the set_intersection() function
      - Added the set_difference() function
   - Graph related
      - Added the graph object
      - Added the is_graph template
      - Added the is_directed_graph template
      - Added the create_moral_graph() function
      - Added the triangulate_graph_and_find_cliques() function
      - Added the graph_contains_length_one_cycle() function
      - Added the find_connected_nodes() function
      - Added the graph_is_connected() function
      - Added the is_clique() function
      - Added the is_maximal_clique() function
      - Added the copy_graph_structure() function
      - Added the create_join_tree() function
      - Added the is_join_tree() function
      - Added the edge() function
   - GUI related
      - Added the base_window::get_display_size() function
      - Added message_box_blocking()
      - Added the bdf_font object which is capable of loading BDF font files into
        the font object used by the gui_widgets
   - Better Unicode support
      - Added the basic_utf8_ifstream: An input stream that can read UTF-8 files
      - Added serialization support for wchar_t and std::wstring
      - Added the is_combining_char() function
      - Added the convert_utf8_to_utf32() function
      - Modified most of the string manipulation functions in dlib/string.h
        to work with any kind of character type
      - The gui widgets' font object now works with Unicode text (i.e. wchar_t 
        and unichar strings) as well as with normal char data.
 Non-Backwards Compatible Changes:
   - The dlib/all_console.cpp and dlib/all_gui.cpp files have been deprecated
     in favor of a new file.  Now to build with dlib you simply add 
     dlib/all/source.cpp to your project regardless of what type of project
     you are building.
   - The GUI program entry point, winmain(), has been removed.  You can now use 
     the normal main() entry point or some other non-standard entry point 
     provided by your compiler.
   - Renamed directed_graph::node::item to directed_graph::node::data
 Bug fixes:
   - Fixed some build issues in gcc 4.2 involving some uses of the std_allocator
   - Fixed some build issues in Visual Studio involving the dir_nav component
     and buidling with NO_MAKEFILE #defined.
   - Moved the #define that disables the old WinSock API into the sockets cpp 
     file.  This should avoid conflicts with people who are using the old WinSock
     API.
   - Changed the tuple template slightly to avoid a bug in Visual Studio 7.1 
     that caused a compile time error in some instances.
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.12" date="Nov 18, 2007">
 New Stuff:
   - Added a destroy() function to the map, set, hash_map, and hash_set objects.
   - Added the tuple object
   - Added an overload of connect() that has a timeout
   - Added rand_kernel_3 as a random number generator that uses the Mersenne Twister 
     algorithm.
   - Added the directed_graph object
   - Added the graph_contains_undirected_cycle() and graph_contains_directed_cycle()
     functions.
   - Added the std_allocator object.   It is a STL style allocator that can use 
     the dlib memory manager objects.
   - std::string manipulation functions:
      - Added the cast_to_string() function.
      - Added the tolower() function
      - Added the toupper() function
      - Added the ltrim() function
      - Added the rtrim() function
      - Added the trim() function
      - Added the lpad() function  
      - Added the rpad() function  
      - Added the pad() function  
 Non-Backwards Compatible Changes:
   - Changed the default logging level from LNONE to LERROR
   - Renamed the ASSERT macro to DLIB_ASSERT and CASSERT to DLIB_CASSERT.  
     This rename avoids a conflict with a macro inside MFC.
   - Changed the logger so that settings are inherited when a new logger
     is instantiated rather than just having the new logger use the 
     default settings.
   - Removed the logger::clear() function since it no longer really
     makes sense given the above change.
   - Removed the get_main_thread_id() function and replaced it with the
     is_dlib_thread() function.
 Bug fixes:
   - Pushed some things into cpp files because doing so avoids build and/or 
     runtime errors on some platforms.   
 Other:
   - Changed the string_cast() function so that it will recognize the words true 
     and false as boolean values.  Also improved the error message inside the 
     string_cast_error exception object.
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.11" date="Oct 25, 2007">
 New Stuff:
   - Added the covariance() function
   - Added the rgb_alpha_pixel pixel type and modified all relevant functions to
     support it.
 Non-Backwards Compatible Changes:
  - The GUI changes that are non-backwards compatible:
       - The alpha parameter is now an unsigned char instead of unsigned int
         and its range is now 0 to 255 instead of 0 to 256.
       - The image_widget no longer has any member functions dealing with
         alpha values.  If you want to use alpha blending you just give it an
         image that has an alpha channel.  The same goes for draw_image().
  - There are now more fields in the pixel_traits template.  So if you were 
    defining your own pixels before you will need to update your pixel_traits 
    specializations.
 Bug fixes:
  - Made some functions non-inline and put some things on the stack 
    instead of heap.  Doing this avoids some problems with certain 
    kinds of builds in visual studio.
 Other:
  - Modified the message_box() function so that it is safe to call end_program() 
    from within its callback event.
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.10" date="Oct 09, 2007">
 New Stuff:
   - Modified the GUI drawing functions to take an alpha argument to allow
     alpha blending.
   - Added the svm_nu_cross_validate() function to perform k-fold
     cross validation using the svm_nu_train() function.
   - Added the boost enable_if templates
   - Added the rand_float extension to the rand object.
   - New matrix features:
      - Added the pinv() function
      - Changed round_zeros() to use the machine epsilon instead of 1e-6 as 
        its default epsilon.
      - Modified the matrix object so that you can declare them with 
        a static dimension and a dynamic dimension.  E.g. matrix&lt;float,0,10&gt;
        is now legal and declares a matrix with a fixed number of columns(10) 
        and a variable number of rows.
      - Added the equal() function to compare two matrices of floating
        point numbers for near equality.
      - Changed the matrix so that operator(long) works for both
        column vectors and now also for row vectors.
      - Added a set_size() and constructor that takes a single long for use in
        sizing row and column vectors.
      - Added the scale_columns() function
 Non-Backwards Compatible Changes:
 Bug fixes:
   - Fixed an error in svm_nu_train() where it would incorrectly
     complain of incorrect nu values for some datasets.
   - Added a missing std:: qualifier at two points in the dlib/vector code that
     could cause a compiler error in some instances. 
 Other:
   - Added a term index to the documentation.
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.9" date="Sep 25, 2007">
 New Stuff:
   - Added a nu support vector classifier training function.
   - Added a multilayer neural network object.
   - Added the "destructive aliasing" checks into the matrix code.  Now temporary 
     matrices are only created during assignment if the right hand side aliases 
     the left hand side in a destructive way.  This removes many of the previous
     uses of temporary matrices.
   - Made the sum() matrix function be able to sum matrices of matrices
   - New matrix functions:
      - acos(), asin(), atan(), ceil(), cos(), cosh(), exp(), floor(), log(), 
        log10(), mean(), norm(), pow(), reciprocal(), round_zeros(), sin(),
        sinh(), sqrt(), tan(), tanh(), variance(), and more overloads of 
        uniform_matrix().
 Non-Backwards Compatible Changes:
 Bug fixes:
   - Added missing nr() and nc() functions to the uniform_matrix() and 
     identity_matrix() functions.
   - Forgot to add a destructor for the dynamically sized matrix resulting in a 
     memory leak.  This is now fixed.
   - Fixed various potential compile time errors
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.8" date="Sep 11, 2007">
 New Stuff:
   - Added a copy of the boost noncopyable base class.
   - added some smart pointers:
      - added shared_ptr
      - added weak_ptr
      - added scoped_ptr
 Non-Backwards Compatible Changes:
 Bug fixes:
 Other:
   - Cleaned up the assert code and removed the need for the dlib/error.ccp file
   - Made the matrix take better advantage of the compile time sized
     dimensions when it can.  
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.7" date="Aug 26, 2007">
 New Stuff:
   - Made it so that command line options have a default conversion to bool
     and the bool tells you if they are on the command line or not.
   - Added an implicit conversion to a scalar to the matrix object 
     when it is of dimension 1x1.
   - Added the thread_function object
   - Added a function to compute the singular value decomposition of a matrix.
 Non-Backwards Compatible Changes:
   - Added two new arguments to the on_request() function.  They allow you to
     see what HTTP headers the client sends you and to control which ones 
     you send back.
 Bug fixes:
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.6" date="Aug 18, 2007">
 New Stuff:
  - matrix object additions:
     - Added some functions to convert between matrix and pixel objects.
     - Added the clamp() function that operates on matrix objects.
     - Added the sigmoid function.
     - Made the matrix object capable of being sized at runtime in addition 
       to its original compile time static sizing capability.
     - Added 3 and 4 argument versions of pointwise_multiply()
     - Added the +=, -=, *= and /= operators to the matrix object.
 Non-Backwards Compatible Changes:
 Bug fixes:
  - Fixed the line numbering in the color pretty printer.  Wasn't being
    done correctly.
  - Fixed a bug in the matrix round() function.
  - Fixed some miscellaneous compile time errors
  - Fixed a bug in the matrix removerc() function.
  - Added some missing checks to catch invalid negative index inputs to
    matrix objects.
  - Fixed a bug in the matrix inv() function.  It could sometimes 
    segfault if used on certain singular matrices 
 Other:
  - string_cast() can now convert hex strings to integers
  - You can now say myarray2d.set_size(0,0) and have it do what
    you would naturally expect.
  - Added some #pragma statements that tell visual studio
    to link the right system libraries automatically.  
    So now you don't have to add these things in the 
    project settings anymore. 
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.5" date="Jul 12, 2007">
 New Stuff:
  - Added the set_all_logging_levels(), set_all_logging_output_streams() 
    functions
  - Added the configure_loggers_from_file() function which allows you to
    easily configure all logger objects using a textual configuration
    file.
 Non-Backwards Compatible Changes:
 Bug fixes:
   - Added a workaround into the code that avoids a potential compilation
     error on Mac OS X systems.
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.4" date="Jun 30, 2007">
 New Stuff:
 Non-Backwards Compatible Changes:
 Bug fixes:
   - Fixed a bug in the POSIX version of the hostname_to_ip() function. It was
     screwy if you asked for more than the first IP address (the same address
     might be returned more than once).
   - Fixed a bug in the pipe object's timeout functions.  The timeouts weren't
     working correctly.
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.3" date="Jun 25, 2007">
 New Stuff:
   - Added the wait_for_num_blocked_dequeues(), enable_enqueue(), 
     disable_enqueue(), and is_enqueue_enabled() functions to the pipe object.
   - The pipe object can now be used with a zero length buffer.
 Non-Backwards Compatible Changes:
   - There is no longer a pipe::kernel_1a_c typedef since the pipe 
     no longer has any requirements to check (due to the change of allowing
     zero length buffer sizes)
 Bug fixes:
 Other:
   - Made the ASSERT and CASSERT macros call dlib_assert_breakpoint() when they 
     fail.  This way you can easily set a breakpoint on them in a debugging
     tool by breaking on calls to this new function.
   - Fixed some typos and unclear parts of the pipe spec. 
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.2" date="Jun 11, 2007">
 New Stuff:
   - Added a thread safe version of the config_reader object (in the form of an 
     extension to the config_reader)
   - Added the wait_until_empty() function to the pipe object.
 Non-Backwards Compatible Changes:
   - Removed the connection::close() and listener::close() functions.  They have
     been replaced by destructors.  To upgrade old code all you have to do is 
     replace statements of the form "object->close();" with "delete object;".  
     Both statements do exactly the same thing.  However, for connection objects, 
     you should probably be using the close_gracefully() function instead.
 Bug fixes:
   - Removed a potential compile time error in the dng image format handling code.
   - Fixed a bug in the bigint object.  The destructor was using "delete" 
     when it should have been using "delete []"
   - Fixed a resource leak in the POSIX version hostname_to_ip()
   - Fixed a significant memory leak in memory_manager_kernel_1
   - Fixed a memory leak that could occur in memory_manager_kernel_2
     and memory_manager_kernel_3 when the constructor for the object
     being constructed threw an exception.
   - Added a missing delete statement to plug a memory leak
     in the md5 computation code.
   - Fixed an uninitialized variable warning from valgrind 
     (in lz77_buffer/lz77_buffer_kernel_2.h).  I think this could
     also potentially result in an error when decoding data but I'm not totally
     sure.  But either way it is fixed now.
   - Changed a call to memcpy to memmove in the sockstreambuf_kernel_2 
     implementation since the copy could potentially be of overlapped memory.  
 Other:
   - Changed the connection::read() and connection::write() functions to take
     longs instead of unsigned longs as the buffer sizes.  They also now 
     return longs instead of ints.  This should be a backwards compatible change.
   - Started using the valgrind tool to check for memory errors in the project and
     found a few things.  Very nice tool :)
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.1" date="Jun 04, 2007">
 New Stuff:
   - Added the multithreaded_object extension to the threads API
   - Added the load_dng() and save_dng() functions which can load and store
     the DNG lossless compressed image format (which I just made up).
 Non-Backwards Compatible Changes:
   - Changed the serialization format for bool to use a 1 byte code rather than 2 
     bytes.  So this breaks compatibility with the old format.
 Bug fixes:
   - The serialization for bool didn't always work right.  This is now fixed. 
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="15.0" date="May 16, 2007">
 New Stuff:
   - New faster version of the bigint object (bigint_kernel_2) that uses
     the Fast Fourier Transform to perform multiplications.
   - The base_window can now be an "undecorated" window.  This new type is suitable
     for making things like popup menus and the like.
   - Added the on_focus_lost() event to the base_window object
   - Added the on_focus_gained() event to the base_window object
   - Added the on_window_moved() event to the base_window object
   - Added the get_pos() function to the base_window object
   - Updated the gui_widgets's drawable interface stuff to support the three
     new event types and the new window type.
   - Added the drawable::draw_rectangle() function
   - Added serialization support for std::complex.
   - Added the assign_image() function
 Non-Backwards Compatible Changes:
   - Removed the color arguments from the drawable_window object's constructor and
     added a new boolean argument (if it is an undecorated window or not).  This
     probably won't break any code but if it does you should get a compiler error
     about it.
   - Made it so you must disable the events in the destructor for your
     drawable gui widgets.  Doing so avoids potential race conditions when
     destructing drawable objects.
   - Made it so that you are required to call close_window() in a window object's 
     destructor.  This avoids a potential race condition.
 Bug fixes:
   - Added a workaround for a bug in MinGW that caused the regression test suite
     to crash when compiled with -O3.
   - Fixed a potential bug in the X Windows version of the gui_core component. 
      Added an extra XFlush() to end_program() because without it a 
      program can crash when calling end_program() in certain instances.
   - The spec for the pipe object said that objects you enqueue into it
     had an "initial value for their type" after the function completes. This
     is incorrect, they are swapped into the pipe so they have an undefined
     value afterwards.  I fixed the spec for the pipe to say this.
   - Fixed a bug in the font rendering functions in the gui_widgets
     component.  It could cause a segmentation fault sometimes.
   - Fixed some potential deadlocks in the windows version of the gui_core
     component.
   - Fixed a bug in the rsignaler object.  When you called wait() or 
     wait_or_timeout() it only unlocked the associated rmutex once (it could be 
     locked more than once and thus might cause a deadlock since the thread
     calling wait() wouldn't actually unlock the mutex in this case).  
   - Fixed the initialize_array() function in memory_manger_kernel_3 to be 
     exception safe.  Previously if an exception occurred while creating
     an array then a resource leak was created.
 Other:
   - Changed the package format for the library somewhat.  The examples are now 
     located in their own top level folder.  Additionally, the HTML version of the 
     documentation also comes in the same archive as the source rather than in a 
     separate download.
   - Started using major and minor version numbers rather than just major ones.
 </old>
 <!-- *******************************************************************************  -->
 <old name="14" date="Apr 11, 2007">
 New Stuff:
   - Added operator&lt;&lt; and operator&gt;&gt; iostream operators to the vector object. 
 Non-Backwards Compatible Changes:
   - Changed the xml_parser's document_handler interface:  
     made empty element tags (&lt;like_this/&gt;) trigger the end_element() callback
     and removed the is_empty bool from start_element().
 Bug fixes:
   - Fixed a potential race condition between the destruction of the thread pool
     and the "program ending handlers" stuff.
 Other:
   - Made the xml parser more robust to different types of new line characters.
   - Modified the source slightly so that it works with mingw.
 </old>
 <!-- *******************************************************************************  -->
 <old name="13" date="Mar 01, 2007">
 New Stuff:
   - The config_reader is now enumerable.  
   - Added the image_widget gui object.
   - Added nr() and nc() to the array2d object.
   - Added the shutdown_connection() function to the iostream extension
     to the server object.
   - Added the timer_kernel_2 implementation which is a version of the timer object
     that is more efficient in its allocation of threads.
   - Added the timeout object.
   - There is now a CMakeLists.txt file located in the dlib folder.  See
     dlib/examples/CMakeLists.txt and dlib/test/CMakeLists.txt for examples 
     that use CMake to build projects using this library.
   - Added the register_program_ending_handler() function to the threading API.
 Non-Backwards Compatible Changes:
   - Removed the config_reader::get_blocks() function.  Use the
     new enumerable interface for the config_reader instead.
   - The array2d object now uses longs instead of unsigned longs to report
     its dimensions and access its elements.  
   - Added a uint64 to the on_connect() callback in the iostream 
     extension to the server object.
   - timer::set_delay_time() now throws and timer::start() now may throw 
     std::bad_alloc.
 Bug fixes:
   - Fixed a bug in end_program().  In X Windows it might not cause the
     program to end right away if it was called from outside the event
     handling thread.
   - Fixed a bug in the implementation of the timeout part of the
     close_gracefully() function.
 Other:
   - The library now works on HP-UX
   - The regression test suite now has command line arguments that
     enable tests to send debug messages to a file.
 </old>
 <!-- *******************************************************************************  -->
 <old name="12" date="Feb 07, 2007">
 New Stuff:
   - The http server extension now supports the POST HTTP method.
   - The attribute list object in the xml_parser is now enumerable.
   - Added the threaded object extension
   - Added the uintn.h file which defines fixed sized unsigned integral types.
 Non-Backwards Compatible Changes:
   - Renamed the on_get() callback in the http extension to the server object to
     on_request()
   - Removed the network byte order functions from the sockets api.  (They are still 
     really there though since they come from actual OS header files.  But 
     officially they have been replaced by the byte_orderer component).
   - Renamed dlib/uint64.h to dlib/uintn.h
 Bug fixes:
 Other:
   - The command line parser will now let you declare long named options with - 
     characters in them.
   - Made it so you can use the COMPILE_TIME_ASSERT macros anywhere rather than
     just inside functions.
 </old>
 <!-- *******************************************************************************  -->
 <old name="11" date="Dec 27, 2006">
 New Stuff:
   - For dlib::matrix
      - Added the tmp() function
      - Added optimized specializations of inv() and det() for 1x1, 2x2, 3x3 and 
        4x4 matrices.
      - Added the removerc() function 
   - Sockets related
      - Added the connect() function
      - Added the is_ip_address() function.
      - Added the close_gracefully() function
      - Added the iostream extension to the server object.
      - Added the http extension to the server object.
 Non-Backwards Compatible Changes:
   - Changed the cpp_tokenizer to not convert characters to their html form.
 Bug fixes:
   - Removed some potential compile time errors.  See the change log for details.
 Other:
   - Improved the web site
   - Added some more example code
   - Added more colors to cpp_pretty_printer_kernel_1.
 </old>
 <!-- *******************************************************************************  -->
 <old name="10" date="Nov 28, 2006">
 New Stuff:
   - std::map is now serializable
   - Added the matrix object and a bunch of supporting code.  
   - Added the list_box graphical widget
   - Added the fill_rect_with_vertical_gradient() function to the
     drawable interfaces list of drawing helpers.
   - Added the open_file_box() function which provides a simple file chooser.
 Non-Backwards Compatible Changes:
 Bug fixes:
   - Made timestamper::get_timestamp() be a const function like it should.  Fixes 
     some compile errors.
   - Fixed a bug in the font::draw_string() function.  It didn't redraw
     multi-line strings right.
   - Fixed a bug in the scroll_bar object that would cause a compile
     error if you tried to call its width() function.
   - Fixed a bug in the array_kernel_1 object.  It would cause a segmentation fault 
     when used sometimes.
 Other:
 </old>
 <!-- *******************************************************************************  -->
 <old name="9" date="Oct 23, 2006">
 New Stuff:
   - Added the following image transformation functions:
      - Added the equalize_histogram() function
      - Added the spatially_filter_image() function
      - Added the threshold_image() function
      - Added the binary_dilation() function
      - Added the binary_erosion() function
      - Added the binary_open() function
      - Added the binary_close() function
      - Added the binary_intersection() function
      - Added the binary_difference() function
      - Added the binary_complement() function
   - Added the clear(), load_from() and default constructor back into the 
     config_reader. 
   - Made the member_function_pointer copyable and also added operator== and != 
     to it.
 Non-Backwards Compatible Changes:
   - Made the vector object templated so you can use types other than double with it.
     But now you 
     have to specify what type you want to use which is slightly different.
   - The asc_pair_remover and asc_remover abstract classes now take a third template 
     argument.  I highly doubt this effects any code outside the library but it is 
     possible.
 Bug fixes:
   - Fixed a bug in the base_window::set_size() function.  If you specified a size
     of (0,0) it caused your program to error out.  This has now been fixed.
   - Fixed a bug in the scroll_bar widget.
   - Fixed a bug in save_bmp().  For some image sizes it would output a goofy 
     looking skewed image.
 Other:
   - Switched everything that used to call operator&lt; directly to instead use 
     std::less or to take a template argument that provides a compare functor that
     defaults to std::less.
 </old>
 <!-- *******************************************************************************  -->
 <old name="8" date="Oct 03, 2006">
 New Stuff:
   - Added the assign_pixel() function
   - Added the hsi pixel type 
   - Added the save_bmp() function
   - Added the static_switch template
 Non-Backwards Compatible Changes:
   - Changed how the config_reader works.  It now has a more powerful syntax and 
     improved interface.  Converting any old code to use the new version should be 
     simple since the new file syntax is very nearly backwards compatable with the 
     old syntax.  (i.e. You probably won't have to change anything about your 
     config files)
   - Renamed the dlib/image_loader.h file to dlib/image_io.h since it now includes
     the image saver stuff.
   - Renamed the pixel struct to rgb_pixel
   - Renamed pixel_traits::color to pixel_traits::rgb
   - Renamed pixel_traits::scalar to pixel_traits::grayscale
 Bug fixes:
   - Fixed a bug in the load_bmp() function.  It would load 24bit bmp files 
     incorrectly.
   - Changed the logger so that it won't deadlock if you write something similar to
     my_log &lt;&lt; LINFO &lt;&lt; function_that_also_logs();.  Although this is a
     dumb thing to do.  But even so, it shouldn't deadlock.
   - Fixed a potential linking problem with the vector object.
 Other:
   - I decided I'm not going to support Borland v5.5.1 anymore.  There are just too 
     many bugs in this compiler.  It is very old at this point so I don't see this 
     being a big deal. 
   - Made the drawable::draw_image() and load_bmp() functions able to handle images
     of any type of pixel.
   - Pulled the imaging, algorithmic and metaprogramming stuff out of the 
     miscellaneous section of the web page and gave them all their own sections.
 </old>
 <!-- *******************************************************************************  -->
 <old name="7" date="Sep 18, 2006">
 New Stuff:
   - Added a logger header that prints the date and time.
   - Added the LTRACE logging level
   - Added a buffered implementation of sockstreambuf. 
 Non-Backwards Compatible Changes:
   - Changed the specs to say that sockstreambuf may be buffered.  
     sockstreambuf_kernel_1 is still just as it always has been though.  So all old 
     code will still work just as it always has.  But all the same, the specs have 
     been changed and now allow for an implemenation that is not 100% backwards 
     compatible.
   - rand_kernel_2 now emits a different string of random numbers.  
 Bug fixes:
   - Changed the logger object's implementation to not try to register
     a thread end handler for the main program thread anymore.  This was 
     technically a bug according to the spec but it actually did end up
     working the way it was supposed to.  But even so, it shouldn't have 
     been doing that.
   - Changed binary_search_tree_kernel_1 so that it avoids a bug in the version of
     gcc on SuSE Enterprise Linux 9.
   - Fixed a bug in the rand_kernel_2 implementation.  It wasn't giving good 
     random numbers. 
 Other:
   - Modified the code so that you don't get any warnings when -Wall is used with 
     GCC.
 </old>
 <!-- *******************************************************************************  -->
 <old name="6" date="Aug 30, 2006">
 New Stuff:
   - Added the ASSERT_ARE_SAME_TYPE macro
   - Added the is_same_type template
   - Added the get_main_thread_id() function to the threading API
   - Added the thread_specific_data extension to the threading API
   - Added the logger object.
   - Added the auto_unlock object to the threading API.
 Non-Backwards Compatible Changes:
 Bug fixes:
 Other:
   - Added an example that is specifically about using threads
   - Added two examples about using the logger object
 </old>
 <!-- *******************************************************************************  -->
 <old name="5" date="Aug 18, 2006">
 New Stuff:
   - Added the memory_manager_stateless object and two implementations of it. 
   - Added the MACOSX macro to dlib/platform.h
   - Added a templated version of create_new_thread() that allow you to start
     a thread with a member function.
   - Added the register_thread_end_handler() function to the threading kernel API. 
   - Added memory_manager_kernel_3
 Non-Backwards Compatible Changes:
   - Changed the meaning of the memory_manager_global::get_number_of_allocations() 
     function because the previous definition of it didn't really make sense for 
     this object.
   - Changed the threading API to wait for all outstanding threads to terminate 
     before allowing the program to end.  It used to just let the OS trash those 
     threads when main() ended but this isn't a safe or portable thing to do.  I 
     used to assume the user would make sure all their threads were done and had 
     cleaned up whatever they were doing before main() ended but this is too much 
     of a burden on the end user.  So now the library will wait for your threads to
     end.  You still need to have some way of telling them it is time to stop though.
 Bug fixes:
   - Fixed a minor bug in dlib/timer/timer_kernel_1.h.  Its implementation was 
     slightly off according to the specification of a timer object.
 Other:
   - The byte_order object is now capable of flipping entire arrays.
   - Made it so that the ENABLE_ASSERTS macro is defined whenever ASSERT is
     on.
   - Made the array container use the memory managers.
 </old>
 <!-- *******************************************************************************  -->
 <old name="4" date="Jul 18, 2006">
 New Stuff:
   - Added functions to explicitly convert to/from little and big endian to the 
     byte_order object.
   - Added the allocate_array() and deallocate_array() functions to the 
     memory_manager.
   - Created the memory_manager_global object
   - Added the remove_last_in_order(), position_enumerator() and 
     remove_current_element() functions to the binary_search_tree object.
 Non-Backwards Compatible Changes:
   - I put an #error directive in the old GUI component to notify anyone
     trying to use it that it is deprecated.  I will be removing it from the
     library in a few months.
   - Switched the reference_counter object back to not using the memory_manager.
     I realized it isn't safe for this object to use the memory_manager since 
     it could result in memory_managers freeing each other's allocations.
   - I redefined the pixel_traits template.  It is now a lot simpler and more 
     convenient.
 Bug fixes:
   - Fixed a minor bug in dlib/rand/rand_kernel_2.cpp
 Other:
   - Added some more compile time checks to the byte_orderer object.
   - Changed some includes and preprocessor macros around a little so now
     everything but the GUI stuff compiles in mac OS X.
   - Added inclusion guards to all the .cpp files
   - Added the all_gui.cpp and all_console.cpp files.  They 
     include all the .cpp files you need to make gui and
     console applications respectively into one file.
   - Made more containers use the memory_manager.
 </old>
 <!-- *******************************************************************************  -->
 <old name="3" date="May 06, 2006">
 New Stuff:
   - Added the enqueue_or_timeout() and dequeue_or_timeout() functions
     to the pipe object.
   - Gave the mouse_tracker the ability to display the mouse position
     relative to a user selected point.
   - Added the message_box() function to the gui_widgets component.
   - Gave the label widget the ability to draw newlines in strings.
   - added the close_window() and is_closed() methods to the base_window
     object.
   - Added the rsignaler extension to the threading API.
   - You can now control the thread pool timeout time by setting the
     DLIB_THREAD_POOL_TIMEOUT #define.
   - Added the get_from_clipboard() and put_on_clipboard() functions
     to the gui_core component.
   - Added the stop_and_wait() function to the timer object.
   - Added the trigger_user_event() function and on_user_event() event
     to the base_window object.  This new event is also forwarded 
     to drawable interfaces inside the receiving window.
   - Added the wrap_around() function to the named_rectangle widget.
   - Added the top(), left(), right(), bottom(), width() and height() 
     functions to the drawable interface. 
 Non-Backwards Compatible Changes:
   - Made the radio_button and check_box widgets pass references to themselves
     when they call their click handlers.  
   - Switched the sync_extension to use the rmutex and rsignaler objects
     rather than the normal non-reentrant ones. ( Chances are that old
     code that used this will still compile fine anyway. )
   - Changed the return type of rand::get_random_number() to be an 
     unsigned char.  I also changed both the implementations of 
     rand because they weren't very good at all. 
   - Changed the functions related to drawing strings in the font class.
   - Changed the drawable's rectangle to default to being empty
     rather than being a single point.  Most code should not notice
     the difference.
 Bug fixes:
   - The event handlers in gui_widgets/drawable.h were private.  They
     should be protected.  This is now fixed.
   - Fixed a bug in the way the scroll_bar was drawn when it was
     the HORIZONTAL type.
   - Changed how the thread pool destructs itself when the program 
     is ending.  Previously it was possible to get an error on
     NetBSD when the program was ending.  This is now fixed.
   - The functions related to setting the jump size in the scroll_bar
     widget were private.  They are now public.
   - There was a bug in the MS Windows version of the gui_core component
     where the members of the base_window would not work if called from
     within the on_window_close() event.  This has now been fixed.
   - Made the set_pos() function work right for the mouse_tracker widget.
   - Fixed a bug in the base64 object where the string "" could potentially 
     be decoded incorrectly.
   - Made the global swap function for crc32_kernel_1 inline.  This fixes a
     potential linker error.
   - Fixed some potential deadlocking that could occur while using the
     gui widgets.  
 Other:
   - I moved all the regression tests into the dlib/test folder and
     made a nice driver program to run all of them.  
   - I have been using the sourceforge compile farms to test the library
     on various platforms.  It now works for Solaris and some of the BSDs 
     in addition to Linux and Windows.
 </old>
 <!-- *******************************************************************************  -->
 <old name="2" date="Apr 08, 2006">
 New Stuff:
   - Added the array_expand extension to the array object.
   - Added the cmd_line_parser_check extension to the command line parser.
   - Added the pipe object.
   - All applicable container classes now use the memory_manager component for
     their memory allocation.
   - New implementations of the memory_manager object. 
   - Added the copy_functor class.
 Non-Backwards Compatible Changes:
   - Moved the wrap_string, narrow, and string_cast functions
     to a new file.  You now have to include dlib/string.h to get
     them.  (This makes a bunch of other things work right in gcc 2.95)
   - Renamed the _L macro to _dT
   - Removed the scopy class
   - Simplified the interface to the memory manager.  It is basically the same
     though.  
   - Removed the max_size() methods from the hash_table and binary_search_tree 
     objects.
   - Removed the T_is_POD template arguments from the hash_table and 
     binary_search_tree objects.
   - Simplified the template arguments to all checking components and extensions. 
     They now take the class they are to extend or check as their only template
     argument.  This only affects you if you haven't been using the kernel_nx 
     typedefs.
 Bug fixes:
 Other:
   - I changed a few things around and now a majority of the library
     again compiles under gcc 2.95.  But some things don't and I currently
     don't plan on making them work because it involves hackish workarounds
     of 2.95's bugs. 
   - Changed the compress_stream_kernel_1 object so that it will detect data
     corruptions better.  This change will prevent it from correctly decompressing
     data that was compressed with a previous version and has an uncompressed size
     greater than about 20,000 bytes.
   - There is a new cpp file you need to compile:  dlib/error.cpp
   - Moved all the regression testing stuff into the dlib/test folder and made
     a nicer test driver to run them.
 </old>
 <!-- *******************************************************************************  -->
 <old name="1" date="Mar 19, 2006">
 New Stuff:
    - Created the byte_orderer object.
    - Created the mouse_tracker gui widget.
    - The sliding_buffer object is now enumerable and serializable.
    - Added the get_filesystem_roots() function to the dir_nar component.
    - Added the create_directory() function to the misc_api component.
 Non-Backwards Compatible Changes:
    - The ASSERT macro is now only enabled if DEBUG or ENABLE_ASSERTS
      is defined.
 Bug fixes:
    - Fixed a minor bug in the cmd_line_parser object.  If you gave
      an option such as --option=arg when option didn't take any 
      arguments it could hang your program.
    - Fixed a bug in wait_or_timeout() in the posix version of the threading 
      api.  The time to wait for was being calculated incorrectly and could 
      result in an excessive number of spurious returns.
    - Fixed a minor bug in the on_keydown() event for windows.
      I had it set such that the shift and ctrl bools would be false
      if they were the actual keys being pressed.  This isn't what the
      specs say should happen but I had a comment in the windows code
      that made it clear that I did it on purpose.  Go figure :)
      This is now fixed. 
 Other:
    - Improved the cpp_tokenizer object's ability to recognize numerical 
      constants.
    - Improved the text_field gui widget.
    - There are now two assert macros.  One called ASSERT
      and another CASSERT.  They both do the same thing but ASSERT
      is only enabled when DEBUG or ENABLE_ASSERTS is defined.
      All the old ASSERT statements were changed to CASSERT statements.
 </old>
 <!-- *******************************************************************************  -->
 <old name="2006-02-23.01">
 New Stuff:
    - Added array_kernel_2 which is a simple layer on top of a C array.
    - Added the tabbed_display GUI widget 
    - Added the widget_group GUI widget 
    - Added the named_rectangle GUI widget 
    - Added the pixel_traits template
 Non-Backwards Compatible Changes:
    - The default maximum size for an array object is now 0 rather than 
      20,000.
 Bug fixes:
 Other:
    - made the cpp_pretty_printer a little better about how it handles
      C style code.  Also added support for /*!A html_anchor_name !*/ 
      style comments.
 </old>
 <!-- *******************************************************************************  -->
 <old name="2006-01-31.02">
 New Stuff:
    - Created the array2d object.
    - Created the base64 object.
    - Created the pixel struct.
    - Created the load_bmp() function which can load a BMP image file
      into an array2d object of pixels.
    - Created the drawable::draw_image() function
 Non-Backwards Compatible Changes:
    - In the drawable interface I made the z order a long rather
      than unsigned long.
    - The cpp_tokenizer object now has a NUMBER token type.
    - removed the get_ prefix from functions in the cmd_line_parser 
      and cmd_line_parser_option objects.  Also changed the 
      cmd_line_parser_option::operator[] function to a normal member 
      function called argument(). 
 Bug fixes:
 Other:
    - cpp_pretty_printer now colors numeric literals a shade of yellow.
 </old>
 <!-- *******************************************************************************  -->
 <old name="2006-01-15.03">
 New Stuff:
    - Created the member_function_pointer object.
    - Created the button_action object.
    - Created the arrow_button object.
    - Created the check_box object.
    - Created the radio_button object.
    - Created the scroll_bar object.
    - More drawing functions to draw various things
      onto a canvas object.
    - Added enable/disable functions to the 
      drawable interface.
 Non-Backwards Compatible Changes:
    - The gui widgets are no longer templated at the 
      class level.
    - The drawable object's constructor now takes a 
      bit set rather than a bunch of bools to tell it
      which events to enable.
    - I changed the names of some of the functions in the
      gui_widgets component so that they all reflected a 
      uniform naming style.
 Bug fixes:
    - Fixed a minor bug in the cpp_tokenizer.  
    - Minor bug in the timer object. See change log for 
      details.
 Other:
    - Made the timer object a little more robust
 </old>
 <!-- *******************************************************************************  -->
 </release_notes>
   </body>
 </doc>