root/pypi: links for dualbounds

root/pypi dualbounds-2.0.0.tar.gz
root/pypi dualbounds-1.0.1.tar.gz
root/pypi dualbounds-1.0.0.tar.gz
root/pypi dualbounds-0.2.1.tar.gz
root/pypi dualbounds-0.2.0.tar.gz
root/pypi dualbounds-0.1.0.tar.gz