Copyright for haskell-natural-transformation source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: natural-transformation
Upstream-Contact: Andy Gill 
Source: https://hackage.haskell.org/package/natural-transformation

Files: *
Copyright: 2015-2016 The University of Kansas
License: BSD-3-clause

Files: debian/*
Copyright: held by the contributors mentioned in debian/changelog
License: BSD-3-clause

License: BSD-3-clause
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 modification, are permitted provided that the following conditions are met:
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     * Redistributions of source code must retain the above copyright
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