| ⇢ | A | LockedBehavior added |
| ⇢ | A | LockedBehavior::getDefaultValue() added | |
| ⇢ | A | LockedBehavior::events() added | |
| ⇢ | A | LockedBehavior::lock() added | |
| ⇢ | A | LockedBehavior::unlock() added | |
| ⇢ | A | UserDataBehavior::init() added | |
| B | ↘ | C | ActiveRecord::behaviors() got worse |
| B | ↛ | ActiveRecord::beforeSave() removed | |
| A | ↛ | ActiveRecord::lock() removed | |
| A | ↛ | ActiveRecord::unlock() removed |