Copyright for gtetrinet source package in Sid

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: GTetrinet
Source: https://github.com/tatankat/gtetrinet

Files: *
Copyright: 1999-2003, Ka-shu Wong
           2002-2006, Jordi Mallach 
           2003-2005, Dani Carbonell
           2016, John Stumpo
           2017, Andreas Jonsson
           2020, Tim Ooms
           2020, Sébastien Noel
License: GPL-2+

Files: po/*
Copyright: 2004, Adam Weinberger and the GNOME Foundation
           2004, Alastair McKinstry 
           2003-2004, Free Software Foundation
           2006, Gnome i18n Project for Vietnamese
           2005, Ilkka Tuohela
           2005, Ka-shu Wong
           2004, Miloslav Trmac
           2013, Rosetta Contributors and Canonical Ltd
License: GPL-2+

Files: debian/*
Copyright: 1999-2011, Jordi Mallach 
           2006-2009, Loic Minier 
License: GPL-2+

License: GPL-2+
 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 2 of the License, or
 (at your option) any later version.
 .
 This package 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 package; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 .
 On Debian systems, the complete text of the GNU General
 Public License version 2 can be found in `/usr/share/common-licenses/GPL-2'.