Insert the Bucketable event e to be executed at next tick.

Property definitions

bucketed_game $ GameTurn :: act_next
	# Insert the Bucketable event `e` to be executed at next tick.
	fun act_next(e: Bucketable[G])
	do
		game.buckets.add_at(e, tick + 1)
		game.buckets.delays.inc(1)
	end
lib/bucketed_game/bucketed_game.nit:182,2--187,4