root/pypi: links for flexibox

root/pypi flexibox-1.0.1.tar.gz
root/pypi flexibox-1.0.1-py3-none-any.whl
root/pypi flexibox-1.0.0.tar.gz
root/pypi flexibox-1.0.0-py3.7.egg
root/pypi flexibox-1.0.0-py3-none-any.whl