| ⇢ | A | UntranslatedMessageExporter added |
| ⇢ | A | MessageStorage::requiresTranslating() added | |
| ⇢ | A | MessageStorage::getPluralCount() added | |
| ⇢ | A | UntranslatedMessageExporter::exportToString() added | |
| ⇢ | A | UntranslatedMessageExporter::__construct() added | |
| B | ↗ | A | MessageStorage::saveSingleTranslation() improved |