root/pypi: links for usr-r16

root/pypi usr-r16-0.0.4.tar.gz
root/pypi usr_r16-0.0.4-py3-none-any.whl
root/pypi usr-r16-0.0.3.tar.gz
root/pypi usr-r16-0.0.2.tar.gz
root/pypi usr-r16-0.0.1.tar.gz