ICONS.txt

"Full_Cup.svg" and "Empty_Cup.svg" icons Copyright (C) 2009 Tommy Brunn
(http://www.blastfromthepast.se/blabbermouth).
"Crystal_Clock.svg" by Everaldo Coelho and YellowIcon [LGPL], via Wikimedia Commons.

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

The artwork 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 artwork.  If not, see <http://www.gnu.org/licenses/>.