Issue #1893818 by Berdir, tim.plunkett, sun: Fixed Plugin discovery caches of blocks are not cleared for all languages.

Issue #1903176 by tim.plunkett: Add a drupal_build_form() helper for using a method as the callback.

Issue #1798214 by tnightingale, g.oechsler, fubhy, katbailey, effulgentsia, Crell, dipen chaudhary: Upcast request arguments/attributes to full objects.

Issue #1906358 by dawehner: Fixed RouteProvider::getRouteByName() / RouteProvider::getRouteByNames() aren't working due to multiple reasons.

Issue #1461732 by filijonka, marcingy, Cottser, udaksh, swentel: Fixed PHP error while publishing comment.

Issue #1811982 by dawehner, damiankloip: Remove ui preview logic viewExecuteable::render() and move it to viewUI.

Issue #1876546 by plopesc: node_type_form_validate() and node_type_form_submit() pointlessly trim machine name value.

Issue #78292 by BrockBoland, chx, Traverus, thoufek, patrickd, sun: Fixed Select element with empty options triggers PHP warning.

Issue #1826602 by damiankloip, xjm, sun, dawehner, EclipseGc: Allow all configuration entities to be enabled/disabled.

Issue #1894002 by scor, msonnabaum, effulgentsia: Update vendor libraries and pin them to specific versions in composer.json.

Issue #1907700 by katbailey: Remove language_init() from the array of bootstrap hooks as it no longer exists.

Issue #1901934 by damiankloip, dawehner, chx: Fixed Configuration entity query doesn't filter properly for NULL values.

Issue #1846648 by yched, swentel: Rename field_attach_submit(), because it is also called from within validation.

Issue #1893818 by Berdir, tim.plunkett: Fixed Plugin discovery caches of blocks are not cleared for all languages.

Issue #1889752 by alexpott: Fixed Remove unnecessary manifest creation in config_install_default_config().