SPDX-License-Identifier: GPL-2.0-or-later

Copyright (c) 2019  Oleg Grenrus <oleg.grenrus@iki.fi>

    This library is free software: you may copy, redistribute and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation, either version 2 of the License, or (at your
    option) any later version.

    This library 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 (see `LICENSE.GPLv2` and `LICENSE.GPLv3`).
    If not, see <https://www.gnu.org/licenses/gpl-3.0.html>.
