New features

[4aaf871] Add example and documentation of logging (@94noni) [f1ee7c6] Use logout_path() helper + add CSRF protection to logout (@wouterj) [5149204] Use stderr for logging in prod (@fabpot)

Bug fixes

[0f99bfe] Update links & license year (@Coderberg) [741aa2e] Remove the dependency on composer/package-versions-deprecated (@stof) [e05392d] Fixed 2 typos: help.add_user/help.post_publication (@sandoba) [6c1e93a] Update PHP doc about annotations IsGranted (@adpauly)