Issue #2218039 by dawehner, sun: Render the maintenance/install page like any other HTML page.
Issue #2242747 by xjm: Add alexpott to MAINTAINERS.txt for the Configuration Entity system.
Issue #2236315 by corbacho: Missing color of primary buttons in Seven Theme.
Issue #1425622 by visabhishek, dealancer: Increase length of 'type' field in search_dataset, search_index tables from 16 to 64.
Issue #2239181 by sun, znerol: SessionManager::isStarted() returns TRUE even after session_write_close() has been called.
Issue #2202629 by sun: Move Drupal\Core\KeyValueStore\State* into Drupal\Core\State\State*.
Issue #2241461 by Berdir, juampy: Locale + basic_auth results in current_user circular reference.
Issue #2223615 by znerol: Use request stack in local task/action manager.
Issue #2242967 by blueminds: User entity reference filter configuration broken.
Issue #2199845 by kay_v | scor: Merge all assertFormatterRdfa() unit test calls into one single unit test.
Issue #2223593 by znerol: Decouple the router.request_context service from the request service.
Issue #2236207 by znerol: Use router request context instead of request service in system breadcrumb builder.
Issue #2231419 by sun, jibran, Rajendar Reddy, Jalandhar, damiankloip: Merge obsolete CachedModuleHandler into ModuleHandler.
Issue #2244185 by damiankloip: Remove cURL dependent options from HTTP client.
Issue #214760 follow-up by sun,  lokapujya: Revised tests for theme name in block admin shows HTML entities: excessive check_plain().
Issue #2200229 by Xano: Use entity access for Views UI routes.
Issue #2208609 by sun, Jalandhar, damiankloip: Move Json utility class into Drupal\Component\Serialization.
Issue #2208633 by sun: Add a Yaml class to Drupal\Component\Serialization.
Issue #2227555 by dawehner: Use route options instead of route defaults for view_argument_map.
Issue #2244757 by tim.plunkett: Path Admin UI is broken and has no test coverage.