loongson/pypi: links for check-vat

loongson/mirror check-vat-0.2.1.tar.gz
loongson/mirror check_vat-0.2.1-py3-none-any.whl
loongson/mirror check-vat-0.2.0.tar.gz
loongson/mirror check_vat-0.2.0-py3-none-any.whl
loongson/mirror check-vat-0.1.0.tar.gz
loongson/mirror check_vat-0.1.0-py3.7.egg
loongson/mirror check_vat-0.1.0-py3-none-any.whl