Version bump sphinx

Fixes issue with using autosummary templates

Author: dihm

setup.cfg

@@ -34,7 +34,7 @@ install_requires =
 [options.extras_require]
 docs = 
   PyQt5
-  Sphinx==3.0.1
+  Sphinx==3.1.0
   sphinx-rtd-theme==0.4.3
   recommonmark==0.6.0
   m2r==0.2.1