fall back on active ROOT and numpy versions if not in config
fall back on active ROOT and numpy versions if not in config

scikit-hep/root_numpy,ndawe/root_numpy,rootpy/root_numpy,rootpy/root_numpy,rootpy/root_numpy,ndawe/root_numpy,scikit-hep/root_numpy,scikit-hep/root_numpy,ndawe/root_numpy,rootpy/root_numpy,ndawe/root_numpy,scikit-hep/root_numpy