Copyright for tkrplot source package in Focal

This is the Debian GNU/Linux r-cran-tkrplot package of tkrplot, a Tk graphics
device for GNU R, which was written by Luke Tierney.

This package was created by Dirk Eddelbuettel .
The sources were downloaded from 
	http://cran.us.r-project.org/src/contrib/

The package was renamed from its upstream name 'tkrplot' to 'r-cran-tkrplot'
to highlight the fact that is it a CRAN package for R. 

Copyright (C) 2002-2008 Luke Tierney

License: GPL

On a Debian GNU/Linux system, the GPL license is included in the file
/usr/share/common-licenses/GPL.

For reference, the upstream DESCRIPTION file is included below:

    Package: tkrplot
    Version: 0.0-5
    Author: Luke Tierney 
    Description: simple mechanism for placing R graphics in a Tk widget
    Title: TK Rplot
    Depends: R (>= 1.5)
    License: GPL
    Maintainer: Luke Tierney