update CHANGES (1.1)

bump version to borg 1.1.4 "34c3 edition"

docs/changes.rst

@@ -171,8 +171,8 @@ The best check that everything is ok is to run a dry-run extraction::
 Changelog
 =========
 
-Version 1.1.4 (not released yet)
---------------------------------
+Version 1.1.4 (2017-12-31)
+--------------------------
 
 Compatibility notes: