root/pypi: links for arconstants

root/pypi arconstants-0.3.0.tar.gz
root/pypi arconstants-0.3.0-py2.py3-none-any.whl
root/pypi arconstants-0.2.1.tar.gz
root/pypi arconstants-0.2.1-py2.py3-none-any.whl