CleverRaven/Cataclysm-DDA — pull request #2125 by Tamunshin (2013-07-20 02:10:52+00:00)
Title: Makes Quick and Light Step valid midgame mutations

As KA101 pointed out on the forums, these two mutations are assigned to categories but can't be mutated naturally during the game. I've just added them to the valid list of mutations.