Copyright for libfilter-perl source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Filter
Upstream-Contact: Reini Urban 
Source: https://metacpan.org/release/Filter/

Files: *
Copyright: 1995-2011 Paul Marquess
           2011-2014 Reini Urban
License: GPL-1+ or Artistic-1
 All rights reserved.
 .
 This program is free software; you can redistribute it and/or
 modify it under the same terms as Perl itself.
 .
 Perl's licensing terms at the time of writing are as follows:
 .
    This program is free software; you can redistribute it and/or modify
    it under the terms of either:
 .
    a) the GNU General Public License as published by the Free Software
       Foundation; either version 1, or (at your option) any later
       version, or
 .
    b) the "Artistic License" which comes with Perl.
 .
    On Debian GNU/Linux systems, the complete text of the GNU General
    Public License can be found in `/usr/share/common-licenses/GPL-1' and
    the Artistic Licence in `/usr/share/common-licenses/Artistic'.