Issue #1864066 by sun, andypost, tim.plunkett: Simplify hook_menu_local_tasks() and MENU_DEFAULT_LOCAL_TASK usage.
Issue #1502816 by joates: Add help text explaining the limitations of language negotiation and page caching.
Issue #967566 by Letharion, mariusz.slonina, indytechcook, adnasa, joestewart, oriol_e9g, Fabianx, tim.plunkett, valthebald, tsvenson, rbayliss, sun, xjm | DocuAnt: Several important Core User settings need to implement hook_field_extra_fields().
Issue #1919116 by agentrickard: Better documentation of drupalPost() and Field API.
Merge branch '8.x' of git.drupal.org:project/drupal into 8.x
Issue #1809352 by nick_schuch, larowlan, jthorson, Wim Leers, Devin Carlson, effulgentsia, tim.plunkett, jessebeach | cweagans: Added Write tour.module and add it to core.
Issue #1871772 by larowlan, EclipseGc: Convert custom blocks to content entities.
Issue #1905230 by Gábor Hojtsy, fago: Improve the typed data API usage of configuration schema.
Issue #501428 by dawehner: add changelog entry for date and time field type.
Issue #1809352 follow-up by nick_schuch: Clean-ups for tour.module.
Issue #1839064 by Berdir: Implement the new entity field API for the list field type.
Issue #1515312 by heyrocker, beejeebus, alexpott, xjm, realityloop, sun: Added snapshots of last loaded config for tracking whether config has changed.
Issue #1743686 by EclipseGc, fago, amateescu, damiankloip: Added Condition Plugin System.
Issue #1807692 by plach, YesCT, yched: Added Introduce a column synchronization capability and use it to translate alt and titles through the image field widget.
Issue #494518 by c4doug, edrupal, Rob C, a_thakur, YesCT, mcrittenden: Added Allow for custom user registration approval email address.
Issue #1906506 by Fabianx, steveoliver, Cottser: Added Twig settings implementation: Show theme hook / template suggestions in HTML comments.
Issue #1920990 by msonnabaum, neclimdul, chx: Add queue to MAINTAINERS.txt.
Issue #1809352 follow-up by jthorson, nick_schuch: CHANGELOG.txt entry and small spelling fix.
Applied patch
inject state an move test class to DrupalKernel