sleepy_penguin is copyrighted Free Software by all contributors, see
logs in revision control for names and email addresses of all of them.

You can redistribute it and/or modify it under the terms of the GNU
Lesser General Public License (LGPL) as published by the Free Software
Foundation, version {2.1}[https://www.gnu.org/licenses/lgpl-2.1.txt]
or (at your option) any later version.

sleepy_penguin 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 Lesser
General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with this library; if not, see https://www.gnu.org/licenses/