loongson/pypi: links for proxyprinter

loongson/mirror proxyprinter-0.3.2.tar.gz
loongson/mirror proxyprinter-0.3.1.tar.gz
loongson/mirror proxyprinter-0.3.1-py3-none-any.whl
loongson/mirror proxyprinter-0.3.0.tar.gz
loongson/mirror proxyprinter-0.3.0-py3-none-any.whl