Hello,

I fixed a small but long-lasting bug that caused a bunch of monsters to
not heal themselves even if they were meant to. Now, since the bug has
been existing for quite many years the fix may have tune implications. I
updated the obviously nasty cases (xzui healing out of combat anyone?),
but in case you feel some mob has become unnecessarily tough feel free
to throw a bug, and we'll see.

++ Duz