| ⇢ | A | ForumThreadLink::getThreadData() added | |
| ⇢ | A | GroupManager::getStudentsCount() added | |
| ⇢ | A | Course::getDefaultIllustration() added | |
| ⇢ | A | User::getDefaultIllustration() added | |
| B | ↗ | A | GroupManager::deleteGroup() improved |
| A | ↛ | ForumThreadLink::get_exercise_data() removed | |
| A | ↛ | user_icon_filter() removed |