Copyright for commons-io source package in Yangtze V1.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Apache Commons IO
Source: http://svn.apache.org/repos/asf/commons/proper/io/

Files: *
Copyright: 2002-2021, The Apache Software Foundation
License: Apache-2.0

Files: debian/*
Copyright: 2005, Trygve Laugstøl
           2005-2006, Wolfgang Baer
           2007, Arnaud Vandyck
           2007, Kumar Appaiah
           2007-2008, Varun Hiremath
           2009, Ludovic Claude
           2010, Torsten Werner
           2011, Jakub Adam
           2013-2016, Emmanuel Bourg
License: Apache-2.0

License: Apache-2.0
 On Debian systems, the full text of the Apache-2.0 license
 can be found in the file '/usr/share/common-licenses/Apache-2.0'