root/pypi: links for noticeslackline

root/pypi NoticeSlackLine-0.2.1b2.tar.gz
root/pypi NoticeSlackLine-0.2.1b2-py3-none-any.whl
root/pypi NoticeSlackLine-0.2.1b1-py3-none-any.whl
root/pypi NoticeSlackLine-0.2.1b0-py3-none-any.whl