Upstream author:
    Artem Galichkin <doomer3d@gmail.com>

Contributors:
    Tonci Antunovic <tantunovic@gmail.com>
    Stef Binde <stef.binde@riseup.net>
    Alf Gaida <agaida@siduction.org>
    Jonathan Hooverman <jonathan.hooverman@gmail.com>
    Ilya87 <yast4ik@gmail.com>
    Tsu Jan <tsujan2000@gmail.com>
    Jerome Leclanche <jerome@leclan.ch>
    Paulo Lieuthier <paulolieuthier@gmail.com>
    Peter Mattern <pmattern@arcor.de>
    Luís Pereira <luis.artur.pereira@gmail.com>
    Thibaut Quentin <thibaut.quentin@laposte.net>
    Alexander Sokolov <sokoloff.a@gmail.com>