bump to version 4.4.1
bump to version 4.4.1

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