Issue #2313053 by Berdir: Fixed Field storage and instance call toArray() in __wakeup() is very slow, remove it?.
Issue #2312925 by olli, kim.pepper, dawehner: Fixed 'Add Link' button adds a new menu instead.
Issue #2313989 by sun: Update vfsStream to 1.3.0.
Issue #2264833 by lokeoke, joelpittet: Convert theme_update_version to update-version.html.twig.
Issue #2313823 by tim.plunkett, martin107: Use FormStateInterface for all typehints.