Copyright (c) 2007-2013 ETH Zurich
  Copyright (c) 2007-2019 Matteo Corti

with the following individuals added to the list of Contributing Authors

  Dan Wallis
  Lawren Quigley-Jones
  Marc Fournier
  Marcus Rejås
  Matteo Corti
  Matthias Fuhrmeister
  Raphael Thoma
  Scott Worthington
  Sven Nierlein
  Tuomas Haarala
  Wolfgang Schricker
  Yannick Gravel
  Jim Hopp
  Javier Gonel
  Christian Ruppert
  Robin H. Johnson
  Max Winterstein
  Colin Smith
  Andreas Dijkman
  Ryan Nowakowski
  Jérémy Lecour
  Mark Ruys
  Milan Koudelka
  Konstantin Shalygin
  Sam Richards
  Sergei Shmanko
  Rolf Eike Beer
  Viktor Szépe
  Philippe Kueck
  Sander Cornelissen
  Pavel Rochnyak
  Vamp898 (https://github.com/Vamp898)
  Emilian Ertel
  Kosta Velikov
  Vojtech Horky
  Nicolas Lafont (https://github.com/ManicoW)
  d7415 (https://github.com/d7415)
  Łukasz Wąsikowski (https://github.com/IdahoPL)
  booboo-at-gluga-de (https://github.com/booboo-at-gluga-de)
  Georg (https://github.com/gbotti)
  Wim van Ravesteijn (https://github.com/wimvr)
  yasirathackersdotmu (https://github.com/yasirathackersdotmu)
  Christoph Moench-Tegeder (https://github.com/moench-tegeder)
  Dan Pritts
  eeertel (https://github.com/eeertel)
  Vojtech Horky (https://github.com/vhotspur)
  Markus Frosch (https://github.com/lazyfrosch)
  Ricardo Bartels (https://github.com/bb-Ricardo)
  eimamagi (https://github.com/eimamagi)
  Stefan Schlesinger
  sokol-44 (https://github.com/sokol-44)
  Jonas Meurer (https://github.com/mejo-)
  Mathieu Simon (https://github.com/matsimon)
  Nico (https://github.com/nicox)
  barakAtSoluto (https://github.com/barakAtSoluto)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.