This Source Code Form is subject to the terms of the Mozilla Public License,
v. 2.0. If a copy of the MPL was not distributed with this file, You can
obtain one at http://mozilla.org/MPL/2.0/.

Copyright (C) 2018, Myy Miouyouyou 

Contributors: JustOff <Off.Just.Off@gmail.com>
              Justin Scott <fligtar@gmail.com>,
              Justin Dolske <dolske@mozilla.com>,
              Philip Chee <philip.chee@gmail.com>,
              Jorge Villalobos <jorge@xulforge.com>
