root/pypi: links for snowdrop

root/pypi snowdrop-1.5.2.tar.gz
root/pypi snowdrop-1.5.2-py3-none-any.whl
root/pypi snowdrop-1.5.1.tar.gz
root/pypi snowdrop-1.5.1-py3-none-any.whl
root/pypi snowdrop-1.5.0.dev0.tar.gz
root/pypi snowdrop-1.5.0.dev0-py3-none-any.whl