Apply copyright headers to all source files

Apply the copyright header Copyright 2014-2018 The Last Pickle Ltd to all source files.

Open source projects and their licenses are a lot safer if all source files are copyrighted to the one entity. It is also a requirement to move projects into foundations like the Apache Software Foundation.

Indeed it is normal for many projects to imply that copyright is provided with contributions, and with Spotify’s copyright notice in LICENSE.txt it seems this was likely an intention, and I suspect all contributors expect the copyright assignment to occur when they open pull requests with contributions.

As far as individuals go, do any of you object to the copyright headers being applied to your past contributions? Bj0rnen varjoranta djsly Yarin78 mattnworb rouzwawi vrischmann dormidon kipwoker internetstaff elsmorian anguenot MALPI neogenix ahenry pndewit n0rad mmatalka skhatri smarsching favoretti echoajohnson SaaldjorMike mcoolive tedoc2000 debswade kingm5 a1exsh denniskline

(We will also need to get the formal agreement from Spotify to grant the copyright.)

┆Issue is synchronized with this Jira Task by Unito ┆Issue Number: K8SSAND-366

[smarsching]

That’s fine by me (I do not think that my contributions are so significant that they merit a copyright of their own anyway).

[michaelsembwever]

Small change of plan here. We’re looking at adding instead the copyright header Copyright 2014-2018 Spotify AB to all source files. I’m going to presume no one that’s replied already objects to that. Spotify already has a CLA signed and submitted with the Apache Software Foundation, so this way we achieve the same with less effort.