loongson/pypi: links for sider

loongson/mirror Sider-0.3.1.tar.gz
loongson/mirror Sider-0.3.1-py2.py3-none-any.whl
loongson/mirror Sider-0.3.0.tar.gz
loongson/mirror Sider-0.3.0-py2.py3-none-any.whl
loongson/mirror Sider-0.2.0.tar.gz