refs #2087, #2086, #1845, #2097: Make sphinx_rtd_theme optional
@@ -53,7 +53,6 @@ requires = [
'snowballstemmer>=1.1',
'babel>=1.3,!=2.0',
'alabaster>=0.7,<0.8',
'sphinx_rtd_theme>=0.1,<2.0',
]
extras_require = {
# Environment Marker works for wheel 0.24 or later
The note is not visible to the blocked user.