Update conf.py

return to 4.11.1.0

source/conf.py

diff --git a/source/conf.py b/source/conf.py
index 5cab4f4..722227f 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -74,9 +74,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '4.12'
+version = '4.11'
 # The full version, including alpha/beta/rc tags.
-release = '4.12.0.0'
+release = '4.11.1.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.