loongson/pypi: links for pyunit-log

loongson/mirror pyunit_log-2020.9.2.tar.gz
loongson/mirror pyunit_log-2020.9.2-py3-none-any.whl
loongson/mirror pyunit_log-2020.2.10-py3-none-any.whl
loongson/mirror pyunit_log-2019.8.23-py3-none-any.whl