advanced_npc is entering maintenance mode, use anpc

[hkzorman]

advanced_npc is being replaced with a new mod, called anpc. While advanced_npc has a lot of functionality that is good and a lot of ideas and concepts, it still fall short of being able to generate really advanced NPC. The main reason is because it is not generic enough.

anpc is the spiritual successor of this mod, and is the one actively being worked on. anpc, opposed to advanced_npc, is a generic NPC mod, with the ability for the user to create and expand NPCs any way they like, with no hard-coded or opinionated behaviors.

I will try, as much as I can, to fix bugs in advanced_npc for those who still use it, but apart from that no new features will be added, existing planned features will be canceled, and all implementation efforts will go to anpc which, in the near future, should be a much better substitute for advanced_npc.