| ⇢ | A | ChatController added | |
| ⇢ | A | RoomController added | |
| ⇢ | A | Room added | |
| ⇢ | A | RoomUtility added | |
| ⇢ | A | Validation added |
| ⇢ | A | RoomUtility::sendToRoom() added | |
| ⇢ | A | RoomUtility::removeMember() added | |
| ⇢ | A | RoomUtility::validateRoom() added | |
| ⇢ | A | ChatController::sendMessageToUser() added | |
| ⇢ | A | ChatController::sendMessageToRoom() added | |
| ⇢ | A | Validation::validateRequired() added | |
| ⇢ | A | RoomUtility::addMember() added | |
| ⇢ | A | RoomUtility::hasMember() added | |
| ⇢ | A | Validation::requireErrorMessage() added | |
| ⇢ | A | Validation::validate() added | |
| ⋮ | view more | ||
| A | ↘ | B | Receiver::onMessage() got worse |
| A | ↛ | Routes::mainRoutes() removed | |