| A | ↘ | B | Message got worse |
| A | ↛ | CreateMessageAttachmentAction removed |
| ⇢ | A | Message::removeAttachment() added | |
| ⇢ | A | MessageAttachment::setResourceFileToAttach() added | |
| ⇢ | A | MessageAttachment::getResourceFileToAttach() added | |
| A | ↛ | CreateMessageAttachmentAction::__invoke() removed |