root/pypi: links for sifter-wagtail

root/pypi sifter-wagtail-3.0a1.tar.gz
root/pypi sifter_wagtail-3.0a1-py3-none-any.whl
root/pypi sifter-wagtail-2.12a0.tar.gz
root/pypi sifter_wagtail-2.12a0-py3-none-any.whl