See a list of contributors here
 Original work: Copyright (C) 2015 Giovanni Campagna
 Modified work: Copyright (C) 2016 Zorin OS
 Modified work: Copyright (C) 2017 Alexander Rüedlinger
 Modified work: Copyright (C) 2017-2019 LinxGem33
 Modified work: Copyright (C) 2019 Andrew Zaech


