Issue #1919142 by tim.plunkett, dawehner: Convert Views UI AJAX forms to use FormInterface.
Issue #1929656 by dawehner: Fixed ModuleHandler::setModuleList() should call resetImplementations() in order to avoid edge cases.
Issue #1829224 by alexpott, pfrenssen, vijaycs85, lirantal: Convert the 'theme_default()' variable to CMI.
Issue #1903750 by benjy: Convert menu_link()  hooks to use Type-Hinting.
Issue #1662990 by mjonesdinero, daniel92, brenda003: Clean up css in File.
Issue #1922396 by damiankloip: Add groupable_only() parameter to DisplayPluginBase::getFieldLabels().
Issue #1921490 by linclark:  should not be static.
Issue #1662974 by barraponto, droplet, Albert Volkman, nitvirus, roborn, David Hernández: Clean up css in dblog.
Issue #1884148 by sun, swentel: Fixed field widget disappears when increase cardinality for image to allow multiple values.
Issue #1912466 by damiankloip, dawehner: Move array_filter_zero() function to FilterPluginBase.
Issue #1932354 by Alexander Pyle: Fix up documentation for image_scale()
Issue #1757098 by PawelR, dudycz, moe4715: Fix up param/return type docs in WebTestBase methods
Issue #1848880 by Wim Leers, effulgentsia: Test order of AJAX commands: add Ajax\FrameworkTest::testOrder(), strengthen testLazyLoad(), fix JS settings not being prepended.
Issue #1591806 by tim.plunkett, ryanissamson, jenlampton, Risse, psynaptic, Gábor Hojtsy, kmcculloch, pakmanlh, Rob Loach: Change block 'subject' so that it's called (admin_)label like everything else on the theme layer.
Issue #1926692 by Gábor Hojtsy: Fixed Menu description is misleading to allow for multiline input.
Issue #1893108 follow-up by Berdir, dawehner: Rename EntityUnitBaseTest => EntityUnitTestBase to conform to coding standards.
Issue #1919166 by vijaycs85: Create configuration schemas for file module.
Issue #1912316 by vijaycs85, sandipmkhairnar, YesCT: Create configuration schemas for dblog module.
Issue #1919196 by vijaycs85: Create configuration schemas for search module.
Issue #1919186 by vijaycs85: Create configuration schemas for node module.