loongson/pypi: links for planes2d

loongson/mirror Planes2D-1.2.tar.gz
loongson/mirror Planes2D-1.2-py3-none-any.whl
loongson/mirror Planes2D-1.1.tar.gz
loongson/mirror Planes2D-1.1-py3-none-any.whl
loongson/mirror Planes2D-1.0.tar.gz
loongson/mirror Planes2D-1.0-py3-none-any.whl