| ⇢ | A | AttachmentDeleteListener added |
| ⇢ | A | AttachmentDeleteListener::__construct() added | |
| ⇢ | A | AttachmentDeleteListener::postRemoveHandler() added | |
| ⇢ | A | AttachmentHelper::attachmentToFile() added | |
| ⇢ | A | AttachmentReverseSearch::deleteIfNotUsed() added | |
| ⇢ | A | AttachmentDeleteListener::preUpdateHandler() added | |
| A | ↛ | Attachment::isFileExisting() removed |