| ⇢ | A | FileDriverTrait added | |
| B | ↗ | A | FileDriver improved | 
| ⇢ | B | FileDriverTrait::createDirectory() added | |
| ⇢ | A | FileDriverTrait::checkDirectory() added | |
| ⇢ | A | FileDriverTrait::getFilename() added | |
| ⇢ | A | FileDriverTrait::getDirectory() added | |
| B | ↛ | FileDriver::createDirectory() removed | |
| A | ↛ | FileDriver::getDirectory() removed | |
| A | ↛ | FileDriver::checkDirectory() removed | |
| A | ↛ | FileDriver::getFilename() removed |