Added OVERSIZE flags to items
Added comment to list item flags (current and future planned ones)
Oversized clothing can be worn regardless of encumberance or anything
Cold and heat are now less likely to interrupt sleeping
Sleeping on an armchair or sofa is now benificial
Sofa and armchair get comfort messages too
Sleeping is only interrupted by very hot or cold temperatures
While sleeping, the player is informed if he is too cold or warm
player::warmth now handles warmth reduction due to rain; wool is not affected
Tweaked warmth values of footwear
Merge branch 'sleep-fixes' into features-and-tweaks
Merge branch 'warmth' into features-and-tweaks
Update changelog
Removed some VARSIZE tags that weren't supposed to be
Merge more temperature system adjustments.

Conflicts:
	player.cpp
Fix ter_at/ter mixup.
Store the current terrain and trap value in a local for temperature and fatigue calculations.