MTSM/games/Voxelgarden/mods/physics/README.md

License of source code:

This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

http://www.gnu.org/licenses/lgpl-2.1.html