root/pypi: links for predata

root/pypi predata-2.1.0-py3-none-any.whl
root/pypi predata-2.0.0-py3-none-any.whl
root/pypi predata-2.0.0b2-py3-none-any.whl
root/pypi predata-2.0.0b1-py3-none-any.whl