Issue #1829224 by alexpott, pfrenssen, vijaycs85, lirantal: Convert the 'theme_default()' variable to CMI.

Issue #501428 by KarenS, swentel, tim.plunkett, webchick, effulgentsia, nod_, scor, Lars Toomre: Added Date and time field type in core.

Issue #1496480 by mrf, disasm, kbasarab, pfrenssen, cam8001, typhonius, Letharion, ACF, vijaycs85, heyrocker, Berdir, alexpott: Convert file system settings to the new configuration system.

Issue #1760934 by tim.plunkett: Fixed WebTestBase::setUp() attempts to enable modules multiple times.

Issue #1807776 follow-up by plach: Minor fixes for Support both simple and editorial workflows for translating entities.

Issue #1807776 by plach, Berdir, YesCT, Gábor Hojtsy, bforchhammer, Bojhan, webchick: Support both simple and editorial workflows for translating entities.

Issue #1479454 by Hugo Wetterberg, galooph, andypost, marcingy, heyrocker, larowlan, alexpott, tim.plunkett, fubhy, sun, dawehner: Convert user roles to configurables.

Revert "Issue #1479454 by Hugo Wetterberg, galooph, dawehner, andypost, marcingy, heyrocker, larowlan, alexpott, tim.plunkett, fubhy, sun: Change notice: Convert user roles to configurables."

Broke testbot. :(

This reverts commit 2ae15972.

Issue #1479454 by Hugo Wetterberg, galooph, dawehner, andypost, marcingy, heyrocker, larowlan, alexpott, tim.plunkett, fubhy, sun: Change notice: Convert user roles to configurables.

Issue #1875632 follow-up by nod_, Wim Leers, effulgentsia: Added wrapper function for JS settings merging behavior, fix tabledrag.

Issue #1871696 by tim.plunkett, xjm, sun, msonnabaum, EclipseGc: Convert block instances to configuration entities to resolve architectural issues.

Issue #1869250 by fago, Berdir, das-peter, YesCT, mradcliffe, fubhy: Various EntityNG and TypedData API improvements.

Issue #1705920 by tim.plunkett, sun, underq, javier.alejandr...: Convert all calls to procedural drupal_array_()*() functions to Drupal\Component\Utility\NestedArray.

Issue #1187726 by chx, Berdir, Fabianx, sun: Fixed Add caching for configuration / rework config object loading.

Issue #1168246 by sun, mgifford, Manuel Garcia, mbrett5062, ry5n, Everett Zufelt, nod_, aspilicious, deviantintegral, tim.plunkett: Freedom For Fieldsets! Long Live The DETAILS.

Issue #1269742 by katbailey, beejeebus, pwolanin, g.oechsler, ksenzee: Make path lookup code into an pluggable class.

Issue #1812732 by xjm, tim.plunkett: Use constants instead of integers in drupalCreateNode() and improve its documentation.

Issue #1812170 by xjm, tim.plunkett: Remove dependency on the standard profile from LocaleContentTest.

Issue #1812732 by xjm: Use constants instead of integers in drupalCreateNode() and improve its documentation.

Issue #1457320 by kbasarab, xjm, jhodgdon: Fix up test assert message/group param docs to say it should not be translated

Issue #1810990 by sun, chx, Berdir: Fixed Teared down test environment leaks into parent site/test runner.

Issue #1723892 by Berdir, Pancho, das-peter, fago: Support for revisions for entity save and delete operations.