| ⇢ | A | Version20190210182620 added | |
| A | ↛ | Version20240927141000 removed |
| ⇢ | A | Version20190210182620::down() added | |
| ⇢ | A | Version20190210182620::getDescription() added | |
| ⇢ | A | Version20190210182620::up() added | |
| ⇢ | A | Session::hasUserInSession() added | |
| A | ↘ | B | SessionManager::insertUsersInCourse() got worse |
| A | ↛ | Version20240927141000::getDescription() removed | |
| A | ↛ | Version20240927141000::down() removed | |
| A | ↛ | Version20240927141000::up() removed |