Merge pull request #20 from bckohan/dependabot/pip/sphinxcontrib-htmlhelp-2.0.1

Bump sphinxcontrib-htmlhelp from 2.0.0 to 2.0.1

Author: bckohan

doc/requirements.txt

@@ -2,7 +2,7 @@ sphinx-rtd-theme==1.1.1
 sphinx-argparse==0.4.0
 sphinxcontrib-applehelp==1.0.4; python_version >= "3.5"
 sphinxcontrib-devhelp==1.0.2; python_version >= "3.5"
-sphinxcontrib-htmlhelp==2.0.0; python_version >= "3.5"
+sphinxcontrib-htmlhelp==2.0.1; python_version >= "3.5"
 sphinxcontrib-jsmath==1.0.1; python_version >= "3.5"
 sphinxcontrib-qthelp==1.0.3; python_version >= "3.5"
 sphinxcontrib-serializinghtml==1.1.5; python_version >= "3.5"