loongson/pypi: links for pycharts

loongson/mirror pycharts-0.1.5-py2.py3-none-any.whl
loongson/mirror pycharts-0.1.4-py3-none-any.whl
loongson/mirror pycharts-0.1.2-py3-none-any.whl
loongson/mirror pycharts-0.1.1-py3-none-any.whl