loongson/pypi: links for sandinvest

loongson/mirror SandInvest-0.5.0.tar.gz
loongson/mirror SandInvest-0.5.0-py2.py3-none-any.whl
loongson/mirror SandInvest-0.4.2.tar.gz
loongson/mirror SandInvest-0.4.2-py2.py3-none-any.whl
loongson/mirror SandInvest-0.4.1.tar.gz
loongson/mirror SandInvest-0.4.1-py2.py3-none-any.whl