root/pypi: links for preqs

root/pypi preqs-0.1.0b3.tar.gz
root/pypi preqs-0.1.0b3-py3-none-any.whl
root/pypi preqs-0.1.0b2.tar.gz
root/pypi preqs-0.1.0b2-py3-none-any.whl
root/pypi preqs-0.1.0.dev1.tar.gz
root/pypi preqs-0.1.0.dev1-py3-none-any.whl