| ⇢ | A | RouteEvent added | |
| A | ↘ | B | Router got worse |
| ⇢ | A | Router::getEventDispatcher() added | |
| ⇢ | A | Router::setEventDispatcher() added | |
| ⇢ | A | RouteEvent::setRequest() added | |
| ⇢ | A | RouteEvent::getRequest() added | |
| ⇢ | A | RouteEvent::getRoute() added | |
| ⇢ | A | RouteEvent::__construct() added |