root/pypi: links for xetracker

root/pypi xetracker-0.1.4.tar.gz
root/pypi xetracker-0.1.3.tar.gz
root/pypi xetracker-0.1.2.tar.gz
root/pypi xetracker-0.1.1.tar.gz
root/pypi xetracker-0.1.tar.gz