Copyright for haskell-tagstream-conduit source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: tagstream-conduit
Upstream-Contact: yihuang 
Source: https://hackage.haskell.org/package/tagstream-conduit

Files: *
Copyright: 2011 yihuang 
License: BSD-3-clause

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

License: BSD-3-clause
 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.
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     * Neither the name of yihuang nor the names of other
       contributors may be used to endorse or promote products derived
       from this software without specific prior written permission.
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 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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