loongson/pypi: links for plusmath

loongson/mirror plusmath-1.0.4.1.tar.gz
loongson/mirror PlusMath-1.0.4.1-py3-none-any.whl
loongson/mirror plusmath-1.0.4.tar.gz
loongson/mirror PlusMath-1.0.4-py3-none-any.whl
loongson/mirror plusmath-1.0.3.tar.gz
loongson/mirror PlusMath-1.0.3-py3-none-any.whl
loongson/mirror plusmath-1.0.2.1.tar.gz
loongson/mirror PlusMath-1.0.2.1-py3-none-any.whl
loongson/mirror plusmath-1.0.2.tar.gz
loongson/mirror PlusMath-1.0.2-py3-none-any.whl
loongson/mirror plusmath-1.0.1.tar.gz
loongson/mirror PlusMath-1.0.1-py3-none-any.whl