| ⇢ | A | InvalidSyncOperationException added | |
| B | ↘ | C | EntityWriter got worse |
| ⇢ | A | SyncOperation::validate() added | |
| ⇢ | A | InvalidSyncOperationException::getErrorCode() added | |
| ⇢ | A | InvalidSyncOperationException::__construct() added | |
| ⇢ | A | InvalidSyncOperationException::getStatusCode() added | |
| ⇢ | A | SyncOperation::getSupportedActions() added | |
| ⇢ | A | EntityWriter::validateSyncOperationInput() added | |
| ⇢ | A | SyncService::validateSyncOperationInput() added |