Copyright for ply source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: ply
Upstream-Contact: David M. Beazley 
Source: https://www.dabeaz.com/ply/

Files: *
Copyright: 2001-2018 David M. Beazley (Dabeaz LLC) 
License: BSD-3-clause

Files: debian/*
Copyright:
 2006-2016, Arnaud Fontaine 
 2018, Stefano Rivera 
 2018, JCF Ploemen 
License: BSD-3-clause

License: BSD-3-clause
 All rights reserved.
 .
 Redistribution  and  use  in  source   and  binary  forms,  with  or  without
 modification, are permitted provided that the following conditions are met:
 .
 * Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
 .
 * Redistributions in binary  form must reproduce the  above copyright notice,
   this list of  conditions and the following disclaimer  in the documentation
   and/or other materials provided with the distribution.
 .
 * Neither the name of the David Beazley  or Dabeaz LLC may be used to endorse
   or  promote products  derived  from this  software  without specific  prior
   written permission.
 .
 THIS SOFTWARE IS  PROVIDED BY THE COPYRIGHT HOLDERS AND  CONTRIBUTORS "AS IS"
 AND ANY  EXPRESS OR IMPLIED  WARRANTIES, INCLUDING,  BUT NOT LIMITED  TO, THE
 IMPLIED WARRANTIES  OF MERCHANTABILITY AND  FITNESS FOR A  PARTICULAR PURPOSE
 ARE DISCLAIMED.   IN NO EVENT  SHALL THE  COPYRIGHT OWNER OR  CONTRIBUTORS BE
 LIABLE  FOR   ANY  DIRECT,  INDIRECT,  INCIDENTAL,   SPECIAL,  EXEMPLARY,  OR
 CONSEQUENTIAL  DAMAGES  (INCLUDING,  BUT   NOT  LIMITED  TO,  PROCUREMENT  OF
 SUBSTITUTE GOODS  OR SERVICES;  LOSS OF  USE, DATA,  OR PROFITS;  OR BUSINESS
 INTERRUPTION)  HOWEVER CAUSED  AND ON  ANY  THEORY OF  LIABILITY, WHETHER  IN
 CONTRACT,  STRICT  LIABILITY, OR  TORT  (INCLUDING  NEGLIGENCE OR  OTHERWISE)
 ARISING IN ANY  WAY OUT OF THE USE  OF THIS SOFTWARE, EVEN IF  ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.