Just a heads up, I don't plan on writing a 4.x or Cataclysm version of ZAP! in the foreseeable future because there's no way I can fit it into current RL circumstances. With
EnhSim supporting Elemental in Cataclysm and several others working on their own mathematical models to answer specific questions I also don't think ZAP! will be "needed" - though I have really enjoyed writing it so far, and I realise that the more tools out there the better.
ZAP! 1.2 can't be usefully adapted to WoW 4.x without significant ground-up rewriting so I don't think there's much point in saying "do with it what you like" - but if anyone does want to hack around with it for any purpose I don't mind.