[Pkg-mozext-maintainers] Bug#956268: Problems identified in debian/copyright

[Michael Lustfield]

Control: severity -1 serious

src/lib/codemirror has
Copyright (C) 2017 by Marijn Haverbeke <marijnh at gmail.com> and others
This person is not mentioned in debian/copyright.
This files is NOT GPL-3+.


This is not a problem with my understanding of the format, this is a problem
with an incomplete debian/copyright file.