Issue #1980822 by Berdir, sun, vladan.me, twistor: Support any entity with path.module.
Issue #2198423 by damiankloip: Store the provider for Views plugins.
Issue #2095303 by swentel, plopesc, Berdir, claudiu.cristea, yched: Rename 'field_entity' to 'field_config' and 'field_instance' to 'field_instance_config'.
Issue #1981858 by Berdir, tim.plunkett, longwave, Les Lim: Rename hook_entity_info/alter() to hook_entity_type_build/alter().
Issue #2004370 by xjm, alexpott, Dean Reilly: Batch the configuration synchronisation process.
Issue #2192419 by sun, mgifford: Use a WCAG-compliant fieldset (fieldgroup) for #type radios/checkboxes.
Issue #2195623 by olli: Remove t() from default test assertions in WebTestBase class.
Issue #1853572 by xjm, alexpott: Remove the old default tracker view.
Issue #2197873 by Sutharsan: Clean-up system.schema.yml to remove deprecated system.fast_404.
Issue #2055371 by ianthomas_uk, Xano, InternetDevels, alexpott: Replace all module_invoke_all() deprecated function calls in OO code.
Issue #2089461 by thedavidmeister, deneo, Alan D., longwave, dsdeiz, stpaultim: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in core/lib.
Issue #2196807 by longwave, divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in block module.
Issue #2196797 by divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in action module.
Issue #2196801 by divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in aggregator module.
Issue #2196805 by divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in ban module.
Issue #2196811 by JiriK: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in book module.
Issue #2196815 by kirby14: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in color module.
Issue #2196821 by JiriK: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in contact module.
Issue #2196825 by kirby14: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in content_translation module.
Issue #2196831 by kirby14: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in edit module.