CHANGELOG.md in groupdate-2.1.1 vs CHANGELOG.md in groupdate-2.2.0

@@ -1,4 +1,8 @@
+## 2.2.0
+
+- Added support for Arrays and Hashes
+
 ## 2.1.1
 
 - Fixed format option with multiple groups
 - Better error message if time zone support is missing for MySQL