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Polishing the AI system

Well, the AI system is done. I figured out the way it works enough to be able to extend it a bit and implement a couple of different behaviors and situations. I'm working to polish the demo and then I will probably release the code on Github. It is very basic, and will include player vs 1, player vs group, player group vs group, and some other stuff like reaction to player, warnings, attack after warning and follow the player.
Also, I will include some needed subsystem, like items and abilities. This is not in any way a 100% reliable tutorial, it is just me throwing code to see if it works. Expect more news on this later this week or next.
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