root/pypi: links for gtk-about-dialog

root/pypi gtk-about-dialog-0.3.0.tar.gz
root/pypi gtk_about_dialog-0.3.0-py3-none-any.whl
root/pypi gtk-about-dialog-0.2.0.tar.gz
root/pypi gtk_about_dialog-0.2.0-py3-none-any.whl