Bumped version number to 3.1.3

Author: Stephen Schiffli

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.1.2
+current_version = 3.1.3
 
 [bumpversion:file:Docs/source/conf.py]
 

Docs/source/conf.py

@@ -55,9 +55,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '3.1.2'
+version = '3.1.3'
 # The full version, including alpha/beta/rc tags.
-release = '3.1.2'
+release = '3.1.3'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.