Issue #2322287 by tuutti, lauriii, wheatpenny: Move datetime classes from preprocess to template.
Issue #2337859 by martin107 | YesCT: LanguageUrlRewritingTest should not be setting the id of a language.
Issue #2340379 by larowlan: Allow PathValidator::getUrlIfValid to support paths with leading /.
Issue #2328411 by dawehner, geerlingguy, herom: Convert all permissions to yml files and permission callbacks.
Issue #2044859 by Berdir, klausi: Convert user roles to entity_reference_field.
Issue #2312693 by stevepurkiss | andypost: Fixed NodeTermData config schema is broken.
Issue #2337847 by alexpott, YesCT, martin107: The negotiated method_id does not need to be sorted on the Language or ConfigurableLanguage object.
Issue #2321609 by benjy, dawehner: Fixed Provide a helpful message in case requirements are not met.
Issue #1976298 by larowlan: Move taxonomy_get_tree() and associated functions to Taxonomy storage, deprecate procedural wrappers.
Issue #2337227 by er.pushpinderrana, larowlan: Fixed NodeAccessControlHandler performs non-strict in_array check.
Issue #2303525 by paulmckibben, tim.plunkett: Provide link tags to alternate languages (hreflang) in HTML head.
Issue #2320521 by jhodgdon: Fixed Follow-up: Node language views filters need label adjustments.
Issue #2328411 followup by herom: Convert all permissions to yml files and permission callbacks.
Issue #2334785 by znerol: Remove _maintenance request attribute from SpecialAttributesRouteSubscriber.
Issue #2329703 by maximpodorov: Fix spelling in varous files
Issue #2329703 by maximpodorov: Fix spelling in varous files
Issue #2329703 by maximpodorov: Fix spelling in varous files
Issue #2329703 by maximpodorov: Fix spelling in varous files
Issue #2329703 by maximpodorov: Fix spelling in varous files
Issue #2325571 by asif_khan, omers | dawehner: Replace _theme() calls by calls to \Drupal::theme()->render().