Updated docs requirements

Author: domdfcoding

doc-source/requirements.txt

@@ -1,15 +1,15 @@
-git+git://github.com/domdfcoding/sphinx-autodoc-typehints.git@typevar-as-pydata
+git+git://github.com/domdfcoding/sphinx-autodoc-typehints.git@backslashes
 autodocsumm>=0.2.0
-default_values>=0.0.8
+default_values>=0.0.9
 domdf_sphinx_theme>=0.1.0
-extras_require>=0.1.1
+extras_require>=0.2.0
 seed_intersphinx_mapping>=0.1.1
 sphinx>=3.0.3
 sphinx-copybutton>=0.2.12
 sphinx-notfound-page>=0.5
-sphinx-prompt>=1.2.0
+sphinx-prompt>=1.1.0
 sphinx-tabs>=1.1.13
-sphinx-toolbox>=0.1.1
+sphinx-toolbox>=0.3.3
 sphinxcontrib-httpdomain>=1.7.0
 sphinxemoji>=0.1.6
-toctree_plus>=0.0.3
+toctree_plus>=0.0.4