Unregistering of Events

For those of you who want a little finer-grained control over events, now you have the ability to unregister event listeners by Plugin or by Listener, either globally or for a specific event, with these methods in HandlerList:

Code:

public static void unregisterAll(Plugin plugin) // already existed
public static void unregisterAll(Listener listener) // added
 
public void unregister(Plugin plugin) // made public
public void unregister(Listener listener) // added

Some example usage:

Code:

HandlerList.unregisterAll(listener); // unregister listener from any events it is registered for
PlayerMoveEvent.getHandlerList().unregister(plugin); // unregister listeners owned by plugin from PlayerMoveEvent

This bleeding branch also added some missing Javadocs.