Make monsters a bit easier to kill
Now that spawners move between levels, let them spawn less often

except first few on the first few levels.
Pick closest smell as a target for an actor that can smell
Clean up and optimize Perception
Reimplement smell perception computation
Delete traversed smells

to avoid being stuck on old smells and sending many actors
to the same smell trail.
Reimplement AI missile attacks

Now AI takes range, obstacles and actors in the way into account.
Fix nullPer, because perceptions can differ ony by the smell part

and then the differene perception has only the smell part non-empty.
Write savefiles atomically, to avoid corruption
Put savegames in a subdir to avoid overcrowding the main dir
Don't alternate between the captain and a closeby actor
Move the spawn frequency from FactionKind to Player
Define 'battle' game mode
Don't assume monsters are spawners
Improve idle level traversals, if nothing interesting left
Generate monsters outside rooms to make them fit in the battle arena
Fix a crash in knowEvents mode
Forbid AI fighting non-foes, until implemented on the server
Fix display of h2h damage
Pick up weapons even while in melee, if weaponless