Bump version: 3.30 → 3.31

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 3.30
+current_version = 3.31
 parse = (?P<major>\d+)\.(?P<minor>\d+)(\.(?P<patch>\d+)(\-(?P<release>[a-z]+))?)?
 serialize = 
 	{major}.{minor}