Copyright for xapp source package in Buster

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: xapps
Source: https://github.com/linuxmint/xapps

Files: *
Copyright: 2016, Linux Mint
License: LGPL-3

Files: files/usr/bin/xfce4-set-wallpaper
Copyright: Weitian Leung 
License: GPL-3

License: LGPL-3
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public License V3.
 .
 The complete text of the GNU Lesser General Public License version 3 can be
 found in `/usr/share/common-licenses/LGPL-3'.

License: GPL-3
 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, version 3 of the License.
 .
 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.  If not, see .
 .
 The complete text of the GNU General Public License version 3 can be found in
 `/usr/share/common-licenses/GPL-3'.