test kombu 5.3.0 & minor doc update. 
sphinx_celery~=2.0.0
Sphinx>=3.0.0,<6.0.0
sphinx-testing~=1.0.1
sphinx-click==4.4.0
-r extras/sqlalchemy.txt
-r test.txt
-r deps/mock.txt
-r extras/auth.txt
-r extras/sphinxautobuild.txt

sphinx_celery~=2.0.0
Sphinx>=3.0.0,<6.0.0
sphinx-testing~=1.0.1
sphinx-click==4.4.0
-r extras/sqlalchemy.txt
-r test.txt
-r deps/mock.txt
-r extras/auth.txt
-r extras/sphinxautobuild.txt
