From the Github page:
This project constitutes a work of the United States Government and is not subject to domestic copyright protection under 17 USC § 105.
The project utilizes code licensed under the terms of the GNU General Public License and therefore is licensed under GPL v2 or later.
Copyright © 2018, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds