| ⇢ | A | migration_266 added | |
| D | ↘ | F | contentBlueprintsPages got worse |
| D | ↘ | F | ExtensionManager got worse |
| ⇢ | B | FieldUpload::validateFilename() added | |
| ⇢ | A | migration_266::upgrade() added | |
| ⇢ | A | migration_266::getVersion() added | |
| ⇢ | A | migration_266::getReleaseNotes() added | |
| D | ↗ | C | General::validateString() improved |