| ⇢ | A | LayoutType added |
| ⇢ | A | LayoutType::buildForm() added | |
| ⇢ | A | BlockPositionRepository::register() added | |
| ⇢ | A | LayoutRepository::get() added | |
| ⇢ | A | BlockRepository::getUnusedBlocks() added | |
| ⇢ | A | LayoutType::configureOptions() added | |
| ⇢ | A | LayoutType::getBlockPrefix() added | |
| ⇢ | A | LayoutController::preview() added | |
| ⇢ | A | LayoutEditPage::選択_プレビューページ() added | |
| C | ↘ | F | TwigInitializeListener::setFrontVariables() got worse |