GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU General Public License (GPL) ensures end users can
run, study, share, and modify the software. If you distribute modified
versions, you must keep notices and provide source code under the same license.
For the full license text, see: https://www.gnu.org/licenses/gpl-3.0.txt