Rebuild the NPC hands and add a hand capture

CHANGELOG.md

@@ -14,6 +14,8 @@ Semantic Versioning.
   cheekbones are sculpted into the head instead of reading as separate spheres.
 - Character torsos taper from the chest to the waist and flare slightly into
   the hips, so shirts and jackets sit less like straight tubes.
+- Character hands now have a wider palm, bent fingers with rounded tips and a
+  separate thumb instead of flat bars.
 - Tourists no longer appear to carry two backpacks: the photo-pose camera bag is
   hidden except while they are actually taking a picture.
 - Backpack shoulder straps are now flattened bands that sit outside the chest