Bug fix, and announce food on floor on entry.
Redid food distribution entirely.
Fixed three minors bugs

1. Entering new level while in deep water
2. Monsters not reseting to wandering when losing track of player's
scent
3. Changed when player scents are reset, which may solve problem
with monsters detecting scent when player enters new level.
Can now displace helpless allies properly. Please test this change!
Discordant allies ignore corpses
Allies forgot about corpses when entering new level.
Discordant allied monkeys return to ally after discord wears off.

They still don't return the item they stole, though.
Fixed previous commit
Further refinements to food system
Added todo list
Tweaked readme