Allowed 'Strong' races to rip off limbs.

Of other people.
Best combat.
Nearly forgot that.
Unstronked vox.
Non-stronk will harmlessly pull on them. Unless It's a robolimb.
Merge pull request #183 from TehFlaminTaco/master

Limb Ripping Combat for stronger races. Like Unathi.
Fixes for a IPC potato men things.

Fixed IPCs magically healing their hands by swapping their hands out.
Added Robot Hands, Feet and Groin.
Added Robo hands feet and groin to the Mech Fab.
Made legless IPCs fall-over when taking off their leg.
Small updates to previous code.

Updated Changelog.
Added Robo Pelvis to Mech-fabs.
Made Hands and Feet fit in boxes.
Made IPCs not care about dismembered limbs.
Fixed visual error.

Made it so that clicking a limb into place didn't keep showing that limb
in your hand.
Merge pull request #185 from TehFlaminTaco/master

Updates that fix a fair bit of the Potato men code.
Merge pull request #186 from jamiedigweed/master

Update to current