There is a tool, but using it is against the ToS, and they have started banning people for using it. However, they recently announced that they are planning to implement skill queuing system into the game, so hopefully you wont have to wait too long
There is a skill queue in the game now, though it doesn't feel horribly responsive atm. Half the time it won't let me press okay on the second skill which kinda defeats the purpose.
Not sure if any of the mods still support this community, but they should be aware that the forums are infested with bots and that their forum needs to be upgraded.