Add hamming to config
Add hamming to config

patricksjackson/xcpp,patricksjackson/xcpp,daniellehrner/xcpp,NobbZ/xcpp,lukasz-m-maciejewski/xcpp,daniellehrner/xcpp,exercism/xcpp,lukasz-m-maciejewski/xcpp,oalbe/xcpp,NobbZ/xcpp,oalbe/xcpp,exercism/xcpp