Tweaked sleep code for cold, and added mirror conditions for being too hot
Reduced cold/hot related message spam
If a body part can't wear clothes due to a mutation, that body part is skipped
Being furry adds warmth
Bark mutation lowers blistering from fire
Added missing )s
Update changelog
Temperature code bugfixes and features.
Fix bracketing that was exiting from equalize_bodytemp() before calculating any temperature changes.
Initialize player::temp_conv on player creation.