root/pypi: links for vdw

root/pypi vdw-0.4.1.tar.gz
root/pypi vdw-0.4.0.tar.gz
root/pypi vdw-0.3.0.tar.gz
root/pypi vdw-0.2.0.tar.gz
root/pypi vdw-0.1.0.tar.gz