Copyright for tfortune source package in Mantic

Copyright 2018-2019 Andre Noll 

The code of this package is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License,
version 3. On Debian GNU systems, the complete text of the GNU General
Public License can be found in `/usr/share/common-licenses/GPL-3'.

All epigrams provided by the tfortunes package are believed to be in
the public domain. Please notify the author if there is an epigram
which is not.