Copyright for ruby-bluefeather source package in Lunar

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: bluefeather
Source: http://ruby.morphball.net/bluefeather

Files: *
Copyright: 2010 Dice 
License: GPL-2+

Files: lib/bluefeather.rb original-tests/*.rb
Copyright: 2004 The FaerieMUD Consortium.
           2009 Dice 
License: GPL-2+

Files: original-tests/data/re-overflow2.txt
Copyright: 1997-2004 Steve Nygard.
License: GPL-2+

Files: debian/*
Copyright: 2013 Youhei SASAKI 
           2021 Debian Ruby Extras Maintainers 
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, or (at your option) any later
 version.
 .
 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 package; if not, write to the Free
 Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 Boston, MA  02110-1301 USA
Comment: On Debian systems, the full text of the GNU General Public License
 version 2 can be found in the file `/usr/share/common-licenses/GPL-2'.