root/pypi: links for dask-ec2

root/pypi dask-ec2-0.5.0.tar.gz
root/pypi dask-ec2-0.4.0.tar.gz
root/pypi dask_ec2-0.4.0-py2.py3-none-any.whl
root/pypi dask-ec2-0.3.1.tar.gz
root/pypi dask-ec2-0.3.0.tar.gz