Copyright for standardskriver source package in Bionic

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Standard Skriver Tool
Upstream-Contact: Mike Gabriel 
Source: https://code.it-zukunft-schule.de/cgit/standardskriver/

Files: standardskriver
 data/*
 examples/*
 ChangeLog
 Makefile
 README.md
 VERSION
Copyright: 2013, Linnea Skogtvedt 
  2015-2017, Mike Gabriel 
License: GPL-2+

Files: debian/*
Copyright: 2017, Mike Gabriel 
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
 .
 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'.