loongson/pypi: links for calendarutil

loongson/mirror calendarutil-2021.4.1.tar.gz
loongson/mirror calendarutil-2021.4.1-py3-none-any.whl
loongson/mirror calendarutil-2021.3.29.tar.gz
loongson/mirror calendarutil-2021.3.29-py3-none-any.whl
loongson/mirror calendarutil-2021.3.28.tar.gz
loongson/mirror calendarutil-2021.3.28-py3-none-any.whl