Anathema Evolved - Body Parts Die at Negative HP

[wrhyme29]

Closes #1643

I'm not sure why they aren't auto destroying when indestructibility disappears if they have negative HP, but this is a workaround that will scan for any negative hp body parts on transition away from Anathema's turn

[jamespicone]

The engine doesn't check for needing to destroy things that stop being indestructible, you have to do it yourself. See Fixed Point. There's a GameController.DestroyAnyCardsThatShouldBeDestroyed function. Maybe just have a trigger that calls that function on phase changes?

[wrhyme29]

I wasn't aware of that - I've updated accordingly