loongson/pypi: links for bpi-13-python

loongson/mirror bpi_13_python-0.1a4.tar.gz
loongson/mirror bpi_13_python-0.1a4-py2.py3-none-any.whl
loongson/mirror bpi_13_python-0.1a3.tar.gz
loongson/mirror bpi_13_python-0.1a3-py2.py3-none-any.whl
loongson/mirror bpi_13_python-0.1a2.tar.gz
loongson/mirror bpi_13_python-0.1a2-py2.py3-none-any.whl