Copyright for libclass-singleton-perl source package in Bionic

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Class-Singleton
Upstream-Contact: Andy Wardley 
Source: https://metacpan.org/release/Class-Singleton

Files: *
Copyright: © 1998-2008, Andy Wardley 
 © 1998 Canon Research Centre Europe Ltd.
License: GPL-1+ or Artistic

Files: debian/*
Copyright:
 © 2002-2003, Brian Nelson 
 © 2005,      Piotr Roszatycki 
 © 2008,      Ansgar Burchardt 
 © 2015,      Lucas Kanashiro 
License: GPL-1+ or Artistic
Comment: It is assumed that all contributors put their work under the same
 license as the module itself.

License: Artistic
 This program is free software; you can redistribute it and/or modify
 it under the terms of the Artistic License, which comes with Perl.
 .
 On Debian systems, the complete text of the Artistic License can be
 found in `/usr/share/common-licenses/Artistic'.

License: GPL-1+
 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 1, or (at your option)
 any later version.
 .
 On Debian systems, the complete text of version 1 of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-1'.