Copyright for python-dateutil source package in Huanghe V3.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Comment: This package was debianized by Guido Guenther 
         Parts of the package are dual licensed under Apache 2.0 as well,
         which is not file-based but date-based.
Source: https://github.com/dateutil/dateutil/
Upstream-Contact: Gustavo Niemeyer 
License: BSD-3-clause

Files: *
Copyright:
 Copyright (c) 2003-2011 - Gustavo Niemeyer 
 Copyright (c) 2012-2014 - Tomi Pieviläinen 
 Copyright (c) 2014-2016 - Yaron de Leeuw 
 Copyright (c) 2015-     - Paul Ganssle 
 Copyright (c) 2015-     - dateutil contributors (see AUTHORS file)
License: BSD-3-clause
 All rights reserved.
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    * 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 copyright holder nor the names of its
      contributors may be used to endorse or promote products derived from
      this software without specific prior written permission.
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 The above BSD License Applies to all code, even that also covered by Apache 2.0.