Hard labor uses strength
Idea from ShenMaster on the lo-fi forums. "If you working with a pickaxe for weeks you know you should gain some strength." And this does just that.
Items changed: Copper, Iron, and small copper resources, Quarry mines, iron rock, and stone mines I-VII. They now have 1.5x hunger (up from 1.2x) when working to reflect their new stat use.
Items stack to 50 inside the resouce due to popular demand.
And YES, this DOES train your strength level.
