Issue #2384545 by Wim Leers, jbrown: $element['#ajax']['callback'] is broken, hence breaking e.g. inserting images in CKEditor
Issue #2363077 by stefan.korn, eojthebrave: Max and min resolution not working
Issue #2380411 by areke, hussainweb, GPrince17: Clean-up Text module test members - ensure property definition and use of camelCase naming convention
Issue #2382557 by Wim Leers: Change JS settings into a separate asset type
Issue #2349805 by balagan, clemens.tolboom, Cyberwolf: Rest classes should use StringTranslationTrait instead of t() function when possible
Issue #2384853 by alexpott: Both configuration directories have to be specified in settings.php
Issue #2384535 by rpayanm, fernando_calsa, areke, Sharique: Make the class variables protected for ImageStyle