| ⇢ | A | NotifiableBehavior::handle() added | |
| ⇢ | A | NotifiableBehavior::init() added | |
| ⇢ | A | NotifiableTrait::shouldReceiveNotification() added | |
| ⇢ | A | NotifiableTrait::viaChannels() added | |
| B | ↗ | A | NotifiableBehavior::attach() improved |
| A | ↛ | NotifiableTrait::shouldSendNotification() removed |