root/pypi: links for collection

root/pypi collection-0.1.6.tar.gz
root/pypi collection-0.1.5.tar.gz
root/pypi collection-0.1.4.tar.gz
root/pypi collection-0.1.3.tar.gz
root/pypi collection-0.1.2.tar.gz
root/pypi collection-0.1.1.tar.gz
root/pypi collection-0.1.tar.gz