Copyright for liquidsoap source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Source: https://www.liquidsoap.info/
Upstream-Name: Savonet Team 

Files: *
Copyright: 2003-2019 Savonet Team
License: GPL-2+

Files: m4/ocaml.m4
Copyright: 2009 Richard W.M. Jones
           2009 Stefano Zacchiroli
           2000-2005 Olivier Andrieu
           2000-2005 Jean-Christophe Filliâtre
           2000-2005 Georges Mariano
License: GPL-2+

Files: m4/pkg_config.m4
Copyright: 2004 Scott James Remnant .
License: GPL-2+

Files: debian/*
Copyright: 2003-2007 Samuel Mimram 
           2007-2014 Romain Beauxis 
           2018-2019 Kyle Robbertze 
License: GPL-2+

Files: debian/language.dtd
Copyright:  2001 Joseph Wenninger 
            2002 Anders Lund 
            2003 Simon Huerlimann 
            2005 Dominik Haumann 
            2008 Wilbert Berendsen 
License: GPL-2+

License: GPL-2+
 Liquidsoap is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 (GPL) as published by the Free Software Foundation; either version
 2 of the License, or (at your option) any later version.
 .
 The license text is contained in /usr/share/common-licenses/GPL-2.