Issue #2062151 by dawehner: Create a current user service to ensure that current account is always available.
Issue #2071997 by yched: Fixed Race condition in caching of field & instance definitions.
Issue #1987858 by oenie, jibran, tim.plunkett: Convert taxonomy_autocomplete() to a new style controller.
Issue #2067881 by ZenDoodles, mradcliffe: Fixed Search is missing from block admin UI after installation.
Issue #2015701 by klausi, pfrenssen, amateescu: Convert field type to typed data plugin for entity reference module.
Issue #2021063 by Berdir, kiamlaluno, YesCT: Use hook_entity_operation_alter() for manage fields and manage display links.
Issue #2065721 by tim.plunkett: Add a dedicated @Block plugin annotation.
Issue #2071655 by Berdir: Fixed AliasWhitelist implements CacheCollector incorrectly, resulting in cache write on every request.
Issue #2064611 by dawehner: Fixed You can't create a shortcut to a route entry without hook_menu().
Issue #2044841 by chx, Berdir: Fixed EFQ relationships broken for entity types with bundles.
Issue #2060721 by legolasbo: Remove Unused local variable  from /core/modules/system/lib/Drupal/system/Plugin/Block/SystemMenuBlock.php.
Issue #2070791 by tstoeckler: Remove unnecessary request context futzing in \Drupal\system\Tests\Routing\RouterTest::testUrlGeneratorFront().
Issue #2071439 by tim.plunkett: Modernize config.module forms.
Issue #2071493 by tim.plunkett: Modernize field_ui().module forms.
Issue #2071473 by tim.plunkett: Modernize image.module forms.
Issue #2071429 by tim.plunkett: Do not inject request via factory method in ForumFormController.
applied patch
work in progress
remove methods
more fixes