Copyright for bluemon source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: bluemon
Source: http://www.matthew.ath.cx/projects/bluemon/bluemon_1.4.orig.tar.gz

Files: *
Copyright: 2004-2006 Matthew Johnson 
License: GPL-2

Files: debian/*
Copyright: 2004-2007 Matthew Johnson 
           2017      Andreas Moog 
           2020      Thiago Andrade Marques 
License: GPL-2

License: GPL-2
 This program 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 2 of the License.
 .
 This program 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. If not, see .
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.