Sorry to bother everyone with this, but ActorEvent and ActorListener have been renamed to InputEvent and InputListener. It’s more accurate and Mario wanted it, so blame him. Hate emails are sufficient, but showing up in person is always good too.
Another recent change in scene2d is with touchability. It was a boolean, now it is an enum. The values are “enabled”, which means the actor and children get all the events. This is the default. “disabled” means the actor and children don’t get any events. “onlyChildren” means the actor does not get events, but the children do. This last one allows an actor to be transparent to input events, while still letting children receive events. This is the default value used by Table, so can be layered on top of other actors without eating all the input events.