sphinx==1.8
sphinxcontrib-napoleon==0.7
mock==4.0.1
sphinx_rtd_theme==0.4.3

sphinx==2.4.1
sphinxcontrib-napoleon==0.7
mock==4.0.1
sphinx_rtd_theme==0.4.3

Update sphinx from 1.8 to 2.4.1
Update sphinx from 1.8 to 2.4.1