| ⇢ | A | PushNotificationTask added | |
| ⇢ | A | PusherProvider added |
| ⇢ | B | PushNotificationTask::mainAction() added | |
| ⇢ | B | UsersController::devices() added | |
| ⇢ | A | HttpException::getHttpCode() added | |
| ⇢ | A | HttpException::getHttpMessage() added | |
| ⇢ | A | HttpException::getData() added | |
| ⇢ | A | PusherProvider::register() added | |
| A | ↘ | B | Api::handleException() got worse |