Fix issue #2796 and also hange Sphinx target in minimum-constraints.txt

to be == rather than <= as required for target definitions in
minimum constraints.

Somewhere I dropped the change from >= to == for the Sphinx target in
minimum-requirements.txt.

dev-requirements.txt

@@ -23,6 +23,10 @@ pytest-cov>=2.7.0; python_version == '2.7' or python_version >= '3.5'
 git+https://github.com/andy-maier/coveralls-python.git@andy/add-py27#egg=coveralls; python_version == '2.7'
 coveralls>=2.1.2,<3.0.0; python_version >= '3.5'
 
+# version 8.11 requires python 3.6, See issue #2796
+more-itertools>=4.0.0,!=8.11.0; python_version < '3.6'
+more-itertools>=4.0.0; python_version >= '3.6'
+
 # Safety CI by pyup.io
 # safety 1.9.0 removed support for Python 2.7 and 3.4 (and now also enforces that)
 safety>=1.8.7,<1.9.0; python_version <= '3.4'

docs/changes.rst

@@ -164,6 +164,9 @@ Released: not yet
 
 * Modified dev-requirements and rtd-requirements to require Sphinx >= 3.54.
 
+* Modify dev-requirements.txt to limit version of more-itertools to  < 8.10.1
+  for python < 3.6. See issue #2796
+
 **Enhancements:**
 
 * Improved the running of indication listeners via `WBEMListener.start()`:

minimum-constraints.txt

@@ -136,6 +136,8 @@ requests-mock==1.6.0
 requests-toolbelt==0.8.0
 yagot==0.5.0
 
+more-itertools==4.0.0
+
 # Easy-server packages
 easy-vault==0.7.0
 easy-server==0.8.0
@@ -177,7 +179,7 @@ tox==2.5.0
 
 # Sphinx (no imports, invoked via sphinx-build script):
 Sphinx==1.7.6; python_version <= '3.4'
-Sphinx>= 3.5.4; python_version >= '3.5'
+Sphinx==3.5.4; python_version >= '3.5'
 sphinx-git==10.1.1
 GitPython==2.1.1
 sphinxcontrib-fulltoc==1.2.0