root/pypi: links for plumpton

root/pypi plumpton-0.1.0a2.tar.gz
root/pypi plumpton-0.1.0a2-py2.py3-none-any.whl
root/pypi plumpton-0.1.0a1.tar.gz
root/pypi plumpton-0.1.0a1-py2.py3-none-any.whl