README.md in tins-1.8.0 vs README.md in tins-1.8.1

@@ -10,9 +10,11 @@
 
 [![Code Coverage](https://codeclimate.com/github/flori/tins/coverage.png)](https://codeclimate.com/github/flori/tins)
 
 ## Changes
 
+* 2015-12-03 Release 1.8.1
+  - Remove some backports already existant in the newer supported rubies.
 * 2015-12-01 Release 1.8.0
   - Add `foo_of` and `foo_annotations` methods to instances of classes with
     annotated methods.
 * 2015-11-09 Release 1.7.0
   - Officially require ruby >= 2.0 and use new hash syntax.