make Model.cubes to be ordered dict instead of a dict; allow cubes in initialization to be an list
make Model.cubes to be ordered dict instead of a dict; allow cubes in initialization to be an list

pombredanne/cubes,zejn/cubes,jell0720/cubes,jell0720/cubes,jell0720/cubes,pombredanne/cubes,she11c0de/cubes,cesarmarinhorj/cubes,ubreddy/cubes,pombredanne/cubes,cesarmarinhorj/cubes,ubreddy/cubes,ubreddy/cubes,zejn/cubes,cesarmarinhorj/cubes,zejn/cubes,noyeitan/cubes,noyeitan/cubes,noyeitan/cubes,she11c0de/cubes,she11c0de/cubes