root/pypi: links for flattools

root/pypi flattools-0.6.3.tar.gz
root/pypi flattools-0.6.2.tar.gz
root/pypi flattools-0.6.2-py3-none-any.whl
root/pypi flattools-0.6.tar.gz
root/pypi flattools-0.6-py2.py3-none-any.whl