root/pypi: links for extension-changer

root/pypi extension_changer-1.0.1.tar.gz
root/pypi extension_changer-1.0.1-py3-none-any.whl
root/pypi extension_changer-1.0.0.tar.gz
root/pypi extension_changer-1.0.0-py3-none-any.whl