| ⇢ | A | NotificationAttachment added |
| ⇢ | A | NotificationAttachment::__construct() added | |
| ⇢ | A | Notification::addNotificationAttachment() added | |
| ⇢ | A | NotificationAttachment::getAttachment() added | |
| ⇢ | A | NotificationAttachment::getId() added | |
| ⇢ | A | NotificationAttachment::getNotification() added | |
| ⇢ | A | NotificationAttachment::setAttachment() added | |
| ⇢ | A | Delivery::getAttachments() added | |
| ⇢ | A | Notification::getAttachments() added | |
| ⇢ | A | Notification::setAttachments() added | |
| A | ↘ | B | DoctrineChannel::handle() got worse |