Copyright for pd-lyonpotpourri source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: lyonpotpourri
Upstream-Contact: Eric Lyon 
Source: https://github.com/pd-projects/lyonpotpourri

Files: *
Copyright: 2007 Eric Lyon
License: Expat

Files: debian/*
Copyright: 2012, Hans-Christoph Steiner
License: public-domain

License: Expat
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 .
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

License: public-domain
 The author disclaims all copyright. The library is in the public domain.
 The author disclaims copyright to this source code.