| ⇢ | A | Version20180920132250 added |
| ⇢ | A | Version20180920132250::up() added | |
| ⇢ | A | Version20180920132250::down() added | |
| ⇢ | A | Answer::getQuestionIndex() added | |
| ⇢ | A | Answer::setQuestionIndex() added | |
| C | ↘ | D | ApiController::answerAction() got worse |
| A | ↛ | Answer::setQuestionNumber() removed | |
| A | ↛ | Answer::getQuestionNumber() removed |