improve resolution chooser

Map effects can update once per game turn instead of once per base turn; all following map effects now use this for more precision

try to make the apprentice never be able to pop on angolwen exit, although I cant understand how ti sometimes bork

now iterCallbacks that yields callback, priority, kind, so you can safely ignore everything but the first.

Unstoppable is not classified as an "other" effect, making it unaffected by Timeless and its cooldown can not be reduced either

and bugfix !!!