loongson/pypi: links for mathcome

loongson/mirror Mathcome-3.141.tar.gz
loongson/mirror Mathcome-3.141-py3-none-any.whl
loongson/mirror Mathcome-3.14.tar.gz
loongson/mirror Mathcome-3.14-py3-none-any.whl
loongson/mirror Mathcome-3.1.tar.gz
loongson/mirror Mathcome-3.1-py3-none-any.whl