loongson/pypi: links for plot-helper

loongson/mirror plot-helper-0.1.2.tar.gz
loongson/mirror plot_helper-0.1.2-py3-none-any.whl
loongson/mirror plot-helper-0.1.1.tar.gz
loongson/mirror plot_helper-0.1.1-py3-none-any.whl
loongson/mirror plot-helper-0.1.0.tar.gz
loongson/mirror plot_helper-0.1.0-py3-none-any.whl