CHANGELOG.md in acfs-0.20.0 vs CHANGELOG.md in acfs-0.21.0.b185

@@ -1,6 +1,12 @@
 # Changelog
 
+## 0.21.0
+
+* Add update_attributes
+* Add validation check to `save` method
+* Inherit attributes to subclasses
+
 ## 0.20.0
 
 * Remove messaging
 * Introduce `Acfs::Resource`