root/pypi: links for d2-png

root/pypi d2_png-0.4-py3-none-any.whl
root/pypi d2_png-0.3-py3-none-any.whl
root/pypi d2_png-0.2-py3-none-any.whl
root/pypi d2_png-0.1-py3-none-any.whl