Update docs (#2544)

* Update docs

* escape & in git_logs_as_xml

docs/bash_helper_functions

@@ -35,7 +35,7 @@ git_logs_as_xml()
     (echo "<log>"; git log --stat=80 --date=iso-strict --pretty=format:"</files_changed></logentry>%n<logentry revision=\"%H\">%n<author email=\"%ae\">%an</author>%n<date>%ad</date>%nGIT_COMMIT_MESSAGE_BEGIN%sGIT_COMMIT_MESSAGE_END%n<files_changed>%n" $logrange $paths | tail -n+2 ; echo; echo '</files_changed></logentry>' ; echo "</log>" ) > $outfile
 
     # sanitize git commit messages
-    sed -e '/GIT_COMMIT_MESSAGE_BEGIN.*GIT_COMMIT_MESSAGE_END/ { s/</\&lt;/g; s/>/\&gt;/g; s/GIT_COMMIT_MESSAGE_BEGIN/<msg>/g; s/GIT_COMMIT_MESSAGE_END/<\/msg>/g;  }' -i $outfile
+    sed -e '/GIT_COMMIT_MESSAGE_BEGIN.*GIT_COMMIT_MESSAGE_END/ { s/</\&lt;/g; s/>/\&gt;/g; s/&/&amp;/g; s/GIT_COMMIT_MESSAGE_BEGIN/<msg>/g; s/GIT_COMMIT_MESSAGE_END/<\/msg>/g;  }' -i $outfile
 
     # trim whitespace at start and end of <files_changed> tags.
     sed -e ':a' -e 'N' -e '$!ba'  -e "s/<files_changed>[ \n]*/<files_changed> /g" -e "s/[ \n]*<\/files_changed>/<\/files_changed>/g" -i $outfile

docs/docs/release_notes.xml

@@ -11,6 +11,24 @@
 <!-- **************************************************************************************  -->
 
 <current>
+New Features and Improvements:
+   - Added Beta distribution to dlib::rand.
+   - Deep learning tooling:
+      - Added ReOrg layer.
+      - Added visitor to draw network architectures using the DOT language.
+      - Made Barlow Twins loss much faster for high dimensionality inputs.
+
+Non-Backwards Compatible Changes:
+   - Do not round coordinates in rectangle_transform (PR #2498).
+
+Bug fixes:
+   - Fix missing ssize_t definition on Windows (PR #2492)
+   - Fix Barlow Twins loss gradient (PR #2518)
+</current>
+
+<!-- **************************************************************************************  -->
+
+<old name="19.23" date="Jan 24, 2022">
 New Features and Improvements:
    - Added serialization support for std::variant and std::optional.
    - Added upgrades to dlib::type_safe_union: type_safe_union_size, type_safe_union_alternative_t,
@@ -35,7 +53,7 @@ Bug fixes:
    - Fix trainer with unsupervised loss (PR #2436)
    - Fix dnn_trainer trying to decrease the learning rate (PR #2442)
    - Fix Layer Normalize (PR #2489)
-</current>
+</old>
 
 <!-- **************************************************************************************  -->