Index: doc/source/conf.py
===================================================================
--- doc/source/conf.py	(revision 55474303e5251a0885391f64d2999489be5196fd)
+++ doc/source/conf.py	(revision 2a9faed4b0de06c7b4133ed6767d69e61138b9d7)
@@ -43,4 +43,5 @@
     'sphinx.ext.autodoc',
     'sphinx.ext.viewcode',
+    'sphinx.ext.napoleon',
 ]