loongson/pypi: links for helperlib

loongson/mirror helperlib-0.5.2.tar.gz
loongson/mirror helperlib-0.5.1.tar.gz
loongson/mirror helperlib-0.5.0.tar.gz
loongson/mirror helperlib-0.4.1.tar.gz
loongson/mirror helperlib-0.4.0.tar.gz
loongson/mirror helperlib-0.3.0-py2.py3-none-any.whl