Issue #2174509 by amateescu, chx: Drupal\Core\Field\FieldDefinition::getSchema() is broken.
Issue #2169267 by damiankloip: Replace drupal_cron_run() with a Cron service.
Issue #1868972 by jweowu: db_query_temporary() fails to create a table when the SQL has leading whitespace.
Issue #2100183 by plopesc: Remove the changed() method from EntityInterface.
Issue #2068329 by peximo, plach, LinL, marcingy, Désiré, penyaskito, herom, chx: Convert user SQL queries to the Entity Query API.
Issue #2028535 followup by tstoeckler: Provide a TourTestBase class for use by core and contrib modules.
Issue #2176831 by chx: CustomBlockSaveTest is not saving body.
Issue #2172973 by tim.plunkett: Ensure ConfigEntities providing a list controller use admin_permission.
Issue #2065917 by SpadXIII, andrewbelcher, kboopathi: SelectQueryExtender::hasAnyTag uses hasAnyTags which doesn't exist.
Issue #1918768 by larowlan, tim.plunkett: Refactor tour module to use routes instead of paths.
Issue #2108599 by alexpott, Gábor Hojtsy, vijaycs85: Convert language_default to CMI.
Issue #2177643 by InternetDevels | jessebeach: Replace theme() with drupal_render() in batch.inc.
Issue #2177673 by InternetDevels | jessebeach: Replace theme() with drupal_render() in Drupal/search_extra_type/Plugin/Search/SearchExtraTypeSearch.php.
Issue #1977608 by batigolix, lostkangaroo, InternetDevels: Update hook_help Aggregator module.
Issue #2177667 by InternetDevels | jessebeach: Replace theme() with drupal_render() in locale.bulk.inc.
Issue #2029767 folllowup by Mark Conroy, batigolix, ifrik: Improve hook_help for history module.
Issue #2091455 by batigolix, InternetDevels, berkas1: Update hook_help for Forum module.
Issue #2157871 by tim.plunkett: Add ConfigStorageControllerInterface.
Issue #2176131 by sun: Database configuration form in installer still uses 'db_prefix' instead of 'prefix'.
Issue #2151101 by joelpittet: Convert theme_status_report() to Twig.