Copyright for pybluez source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: pybluez
Upstream-Contact: Albert Huang 
Source: https://github.com/karulis/pybluez/

Files: *
Copyright: 2004-2005 Massachusetts Institute of Technology
License: GPL-2+

Files: debian/
Copyright: 2004-2005 Massachusetts Institute of Technology
           2018 Diane Trout 
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 program; see the file COPYING. If not, write to the
  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  MA 02110-1301, USA.
  .
  On Debian GNU/Linux systems, the complete text of the GNU General
  Public License can be found in `/usr/share/common-licenses/GPL-2'.