I create extension for Yii 1.
This extension help with small but important task.
After update model data we cannot check what has changed.
This extension saved model state in afterFind method and after we can check each attribute is changed and value before update.
Link to github: github.com/One-art/itchanged
Link to composer: packagist.org/packages/one-art/itchanged
Glad to see any comments and push requests.