Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ Upstream-Name: Bitmask Thunderbird Extension Source: https://github.com/leapcode/thunderbird_extension Upstream-Contact: drebs Files: * Copyright: 2013 The LEAP Encryption Access Project , drebs License: GPL-3+ License: GPL-3+ This package 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. . On Debian systems, the complete text of the GNU General Public License version 3 can be found in file "/usr/share/common-licenses/GPL-3".