Copyright for xonsh source package in Bullseye

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: xonsh
Files-Excluded: xonsh/ply tests/man1 docs/_static .gitignore xonsh/webconfig xonsh/vended_ptk

Files: *
Copyright: 2013-2017 the xonsh developers
License: bsd-2-clause-extended

Files: xonsh/xoreutils/_which.py
Copyright: 2002-2007 ActiveState Software Inc.
License: MIT

Files: debian/*
Copyright: 2016-2017 Gordon Ball 
License: MIT

License: bsd-2-clause-extended
    Redistribution and use in source and binary forms, with or without modification, are
    permitted provided that the following conditions are met:
    .
       1. Redistributions of source code must retain the above copyright notice, this list ofi
          conditions and the following disclaimer.
    .
       2. 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.
    .
    THIS SOFTWARE IS PROVIDED BY THE XONSH DEVELOPERS ``AS IS'' AND ANY EXPRESS OR IMPLIED
    WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
    FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE XONSH DEVELOPERS OR
    CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
    ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
    ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    .
    The views and conclusions contained in the software and documentation are those of the
    authors and should not be interpreted as representing official policies, either expressed
    or implied, of the stakeholders of the xonsh project or the employers of xonsh developers.

License: MIT
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the
    "Software"), to deal in the Software without restriction, including
    without limitation the rights to use, copy, modify, merge, publish,
    distribute, sublicense, and/or sell copies of the Software, and to
    permit persons to whom the Software is furnished to do so, subject to
    the following conditions:
    .
    The above copyright notice and this permission notice shall be included
    in all copies or substantial portions of the Software.
    .
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.