Additional Permissions For Submission to Apple App Store: Provided that you
are otherwise in compliance with the GPLv3 for each covered work you convey
(including without limitation making the Corresponding Source available in compliance
with Section 6 of the GPLv3), Open Whisper Systems also grants you the additional
permission to convey through the Apple App Store non-source executable versions
of the Program as incorporated into each applicable covered work as Executable
Versions only under the Mozilla Public License version 2.0 (https://www.mozilla.org/en-US/MPL/2.0/).