CHANGELOG.md in groupdate-2.5.0 vs CHANGELOG.md in groupdate-2.5.1

@@ -1,4 +1,12 @@
+## 2.5.1
+
+- Added `group_by_quarter`
+- Added `default_value` option
+- Accept symbol for `format` option
+- Raise `ArgumentError` if no field specified
+- Added support for ActiveRecord 5 beta
+
 ## 2.5.0
 
 - Added `group_by_period` method
 - Added `current` option
 - Raise `ArgumentError` if no block given to enumerable