Copyright for mir-core source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: mir-core
Upstream-Contact: The D Mir development team, Ilya Yaroshenko
Source: https://github.com/libmir/mir-core

Files: *
Copyright:
 Mir development team,
 Ilya Yaroshenko,
 Phobos Team,
 (c) 2007-2011 Digital Mars,
 Andrei Alexandrescu
License: BSL-1.0

Files: debian/*
Copyright: 2018 Matthias Klumpp 
License: BSL-1.0

License: BSL-1.0
 Boost Software License - Version 1.0 - August 17th, 2003
 .
 Permission is hereby granted, free of charge, to any person or organization obtaining a copy of
 the software and accompanying documentation covered by this license (the "Software") to use,
 reproduce, display, distribute, execute, and transmit the Software, and to prepare derivative
 works of the Software, and to permit third-parties to whom the Software is furnished to do so,
 all subject to the following:
 .
 The copyright notices in the Software and this entire statement, including the above license grant,
 this restriction and the following disclaimer, must be included in all copies of the Software,
 in whole or in part, and all derivative works of the Software, unless such copies or derivative works
 are solely in the form of machine-executable object code generated by a source language processor.
 .
 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, TITLE AND NON-INFRINGEMENT.
 IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE FOR ANY DAMAGES OR
 OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.