| ⇢ | A | DatabaseDriver::rollBackTransaction() added | |
| ⇢ | A | DatabaseDriver::commitTransaction() added | |
| ⇢ | A | DatabaseDriver::startTransaction() added | |
| ⇢ | A | DbalDriver::startTransaction() added | |
| ⇢ | A | DbalDriver::rollBackTransaction() added | |
| ⇢ | A | DbalDriver::commitTransaction() added | |
| ⇢ | A | Model::usesTransactions() added | |
| B | ↗ | A | DatabaseDriver::getConnection() improved |
| A | ↘ | B | Model::performDispatch() got worse |