Added stone knife as a butchering tool.

Changed number of bullets/spears consumed when hunting
Changed foraging categories - now you should be able to find branches and twigs again

Values for animal traces tweaked to 60-95 percent. We'll see where that goes...
Changed amount of ammunition/spears used for hunting according to type of prey.
Added additional foraging category that can help finding more animal traces
Now animal traces quantity ranges from 3 to 15, animal tracks and large animal tracks buffed too

You should get DEER now by hunting with rifle.
More animal traces rewarded when Foraging.
It is possible to get animal traces from traps.
Tweaked some values - feedback needed on how easy/hard is to find animal traces when foraging.