[Solved] What happened to all of the player events?

In order to get the source for any event that is CauseTracked, you now must query for the Cause. So for example, lets assume you want to see if a Player caused a BreakBlockEvent, you would do the following :

public void onBreakBlockEvent(BreakBlockEvent event) {

    Optional<Player> player = event.getCause().first(Player.class);
    if (player.isPresent()) {
       // do stuff
    }
}