Issue #2198343 by damiankloip, longwave: Convert all usages of cache() and cache_invalidate_tags() procedural functions.

Issue #2006606 by plach, vijaycs85, Gábor Hojtsy, dawehner, YesCT, pfrenssen: Views rendering ignores entity language, eg: Identical nodes rendered in views when nodes have translations.

Issue #2187735 by ianthomas_uk, Sutharsan, andypost: Add removal information to docblock of all @deprecated functions.

Issue #2196907 by divesh.kumar: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in link module.

Issue #2196901 by divesh.kumar, longwave: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in language module.

Issue #2196897 by divesh.kumar: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in image module.

Issue #2196895 by divesh.kumar: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in forum module.

Issue #2196831 by kirby14: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in edit 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 #2196821 by JiriK: Convert all calls & docs references to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in contact 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 #2196811 by JiriK: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in book module.

Issue #2196805 by divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in ban module.

Issue #2196801 by divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in aggregator module.

Issue #2196797 by divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in action module.

Issue #2196807 by longwave, divesh.kumar: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in block module.

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 #2055371 by ianthomas_uk, Xano, InternetDevels, alexpott: Replace all module_invoke_all() deprecated function calls in OO code.

Issue #2192419 by sun, mgifford: Use a WCAG-compliant fieldset (fieldgroup) for #type radios/checkboxes.

Issue #1981858 by Berdir, tim.plunkett, longwave, Les Lim: Rename hook_entity_info/alter() to hook_entity_type_build/alter().

Issue #2095303 by swentel, plopesc, Berdir, claudiu.cristea, yched: Rename 'field_entity' to 'field_config' and 'field_instance' to 'field_instance_config'.

Issue #2119905 followup by damiankloip: Provide @ConfigEntityType and @ContentEntityType to have better defaults.

Issue #2170471 by Xano, EclipseGc: ContextAwarePluginBase compromised after commit of Core PluginBase.

Issue #2119905 by damiankloip, tim.plunkett, Berdir: Provide @ConfigEntityType and @ContentEntityType to have better defaults.

Issue #2179083 by Wim Leers, vijaycs85: Rendered menus (e.g. menu blocks) should set cache tags to inform the page cache.

Issue #2191285 by sun, andypost, jibran, Berdir, alexpott: Text module is not required, but is marked as required.

Issue #2002158 by klausi, andypost, effulgentsia, vlad.dancer: Convert form validation of comments to entity validation.

Issue #2173655 by Cottser, xjm, jessebeach, alexpott, rlmumford: Refactor theme() to _theme(); make it a private API to discourage module developers from circumventing the renderable build system.

Issue #2194111 by sun: Error handler throws exception when service container is not (fully) available yet.