Trigger an event on this context.

		Params:
			event_name (string):
				Event name to trigger

		Args and kwargs are passed to each handler - see the bubbler.Event class
		for more information.

		Returns:
			bubbler.Event:
				Event instance after execution of all handlers

def trigger(self, event_name, *args, **kwargs):
		"""Trigger an event on this context.

		Params:
			event_name (string):
				Event name to trigger

		Args and kwargs are passed to each handler - see the bubbler.Event class
		for more information.

		Returns:
			bubbler.Event:
				Event instance after execution of all handlers
		"""
		ev = Event(event_name, self)
		ev.trigger(*args, **kwargs)
		return ev