Changes to work correctly with latest version of Sphinx

.travis.yml

@@ -182,7 +182,7 @@ script:
   - python devtools/run-ctest.py --start-time $START_TIME
 
   - if [[ ! -z "${DOCS_DEPLOY}" && "${DOCS_DEPLOY}" = "true" ]]; then
-      pip install sphinx==1.5.6 sphinxcontrib-bibtex sphinxcontrib-lunrsearch sphinxcontrib-autodoc_doxygen;
+      pip install sphinx sphinxcontrib-bibtex sphinxcontrib-lunrsearch sphinxcontrib-autodoc_doxygen;
       make sphinxhtml;
       make sphinxpdf;
       make C++ApiDocs PythonApiDocs;

docs-source/sphinx/autonumber.py

 from docutils.parsers.rst import roles
-from docutils.nodes import Text, reference, section
+from docutils.nodes import Text, reference, section, label
 from sphinx.roles import XRefRole
 
-class autonumber(Text):
+class autonumber(label):
     pass
 
 class autonumber_ref(reference):
     pass
 
 def autonumber_role(name, rawtext, text, lineno, inliner, options={}, content=[]):
-    return ([autonumber(text)], [])
+    return ([autonumber(text=text)], [])
 
 def doctree_resolved(app, doctree, docname):
     index = {};
@@ -68,4 +68,3 @@ def setup(app):
     app.add_role('autonumref', XRefRole(nodeclass=autonumber_ref))
     app.connect('doctree-resolved', doctree_resolved)
 
-