root/pypi: links for plib3-extensions

root/pypi plib3.extensions-1.3.tar.gz
root/pypi plib3.extensions-1.2.tar.gz
root/pypi plib3.extensions-1.1.post2.tar.gz
root/pypi plib3.extensions-1.1.post1.tar.gz
root/pypi plib3.extensions-1.1.tar.gz