| ⇢ | A | ApnConnection added | |
| ⇢ | A | FeedbackService added |
| ⇢ | A | FeedbackService::openConnection() added | |
| ⇢ | A | FeedbackService::fetchFeedback() added | |
| ⇢ | A | ApnConnection::open() added | |
| ⇢ | A | FeedbackService::__construct() added | |
| ⇢ | A | FeedbackService::get() added | |
| ⇢ | A | ApnConnection::__construct() added | |
| ⇢ | A | ApnConnection::send() added | |
| ⇢ | A | ApnConnection::close() added | |
| A | ↛ | ApnChannel::getFeedback() removed |