Copyright for texext source package in Lunar

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: texext
Upstream-Contact: Matthew Brett, Ondřej Čertík 
Source: https://github.com/matthew-brett/texext

Files: *
Copyright: Copyright (c) 2015-2020, Ondřej Čertík, Matthew Brett
License: BSD-2-clause

Files: debian/*
Copyright: 2018-2022 © Sandro Tosi 
License: BSD-2-clause

License: BSD-2-clause
 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 of 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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.

Files: texext/mathcode.py
Comment:
 The mathcode directive is based on sphinx/ext/mathbase.py.  That file has
 license:
 .
   :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
   :license: BSD, see LICENSE for details.