loongson/pypi: links for envpos

loongson/mirror envpos-0.82-py3-none-any.whl
loongson/mirror envpos-0.81-py3-none-any.whl
loongson/mirror envpos-0.8-py3-none-any.whl
loongson/mirror envpos-0.7-py3-none-any.whl
loongson/mirror envpos-0.6-py3-none-any.whl