Copyright for htop source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: htop
Upstream-Contact: Hisham Muhammad 
Source: http://hisham.hm/htop/releases/

Files: *
License: GPL-2+
Copyright: 2004-2018 Hisham Muhammad

Files: debian/*
License: GPL-2+
Copyright: 2016 Daniel Lange
           2018 Graham Inggs
           2008-2016 Eugene V. Lyubimkin
           2004-2008 Bartosz Fenski

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; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, 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'.