Quartz by nonjon, pecinko

Quartz Artwork is licensed under a
Creative Commons Attribution-ShareAlike 4.0 Unported License.
You can find the license details here: <http://creativecommons.org/licenses/by-sa/4.0/>.

Quartz code work is licensed under
GNU General Public License (GPL), Version 2.0
You can find the license details here: <https://www.gnu.org/licenses/gpl-2.0>.
