root/pypi: links for cargo-users

root/pypi cargo-users-0.2.0.tar.gz
root/pypi cargo-users-0.1.7.tar.gz
root/pypi cargo-users-0.1.6.tar.gz
root/pypi cargo-users-0.1.5.tar.gz
root/pypi cargo-users-0.1.4.tar.gz