root/pypi: links for bump4version

root/pypi bump4version-1.0.0.dev3.tar.gz
root/pypi bump4version-1.0.0.dev3-py3-none-any.whl
root/pypi bump4version-1.0.0.dev2.tar.gz
root/pypi bump4version-1.0.0.dev2-py3-none-any.whl