root/pypi: links for zfit-stubs

root/pypi zfit_stubs-0.0.1.dev20.tar.gz
root/pypi zfit_stubs-0.0.1.dev20-py2.py3-none-any.whl
root/pypi zfit_stubs-0.0.1.dev19.tar.gz
root/pypi zfit_stubs-0.0.1.dev19-py2.py3-none-any.whl