Issue #1953408 by swentel, aspilicious, andypost, yched: Remove ArrayAccess BC layer from field config entities.

Issue #731724 by larowlan, andypost, dixon_, tsvenson: Convert comment settings into a field to make them work with CMI and non-node entities.

Issue #2074037 by Wim Leers, effulgentsia: Add drupalPostUrl() — drupalPost()/drupalPostAjax() are for forms only, D8 JS performs non-form HTTP requests.

Issue #1497374 by yched, chx, amateescu, plach, Damien Tournoud, fago, swentel: Switch from Field-based storage to Entity-based storage.

Issue #2011578 by mortendk, tlattimore, Cottser, soulston: Markup for Stark's page.html.twig + maintenance-page.html.twig.

Issue #2046541 by e0ipso: Fixed Unable to activate content translation in the content type edit form.

Issue #2030913 by jthorson, andypost, jaredsmith: Fixed Comment module WSOD due to old translation_entity() module name used.

Issue #1969728 by yched, effulgentsia, swentel, fago, plach: Implement Field API 'field types' as TypedData Plugins.

Issue #1818570 by Berdir, effulgentsia, das-peter, andypost: Convert users to the new Entity Field API.

Issue #1620010 by dawehner, ParisLiakos, plach, jibran: Move LANGUAGE constants to the Language class.

Issue #1810386 by plach, YesCT, Bojhan, bforchhammer, Gábor Hojtsy, falcon03: Create workflow to setup multilingual for entity types, bundles and fields.

Revert "Issue #1687864 by sun, BarisW, mgifford, sebsebseb123: Bring theme_breadcrumb() up to WCAG 2.0 AA."

Note to self: Don't commit from the same install you're testing on. ;)

This reverts commit cf860477.