Issue #2215877 by asrob: Fix function signature for hook_ajax_render_alter()
Issue #2189497 by paulh: Add docs to EntityType annotation class to tell where to actually find the relevant docs
Issue #2216945 by asrob: Remove duplicate ingroup on filter_xss
Issue #2217643 by chx, tim.plunkett: Add docs to setFormClass method
Issue #2217781 by alexpott: Can only run tests from the installed profile.
Issue #1986090 by markpavlitski, jessebeach: Profile config does not overwrite module default config on install (system.cron.yml).
Issue #2215503 by Gábor Hojtsy, Wim Leers: Use services instead of event subscribers for config module overrides.
Issue #2216961 by Gábor Hojtsy, xjm | alexpott: Document Config, ConfigBase, and StorableConfigBase.
Issue #2188565 by Wim Leers, Berdir: Test coverage for Comment, Custom Block, Node, Taxonomy Term and User entity cache tags.
Issue #1351352 by sun, lucascaro, Gábor Hojtsy, rupertj: Distribution installation profiles are no longer able to override the early installer screens.
Issue #2216701 by alexpott, sun, longwave: Random test failure in ToolbarAdminMenuTest.
Issue #2216909 by sun, longwave: Random test failure in ConfigTranslationUiTest.
Issue #2191107 by jessebeach, longwave, nicksanta, jhodgdon, xjm: Update API documentation for _theme() to clearly indicate that it is for internal use only.
Issue #1862300 by tim.plunkett, dawehner, YesCT: Move ConfigStorageController::getQuery() to EntityStorageControllerInterface.
Issue #2212437 by longwave, Alumei: Fix up docs for Select db classes
Issue #2214063 by benelori: 'Add vocabulary' page doesn't display correct page title.
Issue #2216053 by damiankloip: Mark content_translation handler in user_admin_people (admin/people) view as optional.
Issue #2175821 by Xano, dawehner: Add placeholder support to the @Translation annotation.
Issue #2215413 by Eli-T, alexpott: Split the Config class into StorableConfigBase and ConfigBase. Make ThemeSettings inherit from ConfigBase.
Issue #2166529 by Kartagis: Typo in install.core.inc comments.
Issue #2151095 by joelpittet, longwave, c4rl, IshaDakota, pplantinga, gnuget, jeanfei, sbudker1, Cottser: Convert theme_admin_page() to Twig
Revert "Issue #2151095 by joelpittet, longwave | Cottser: Convert theme_admin_page() to Twig."
Sorry, wrong commit credit.
This reverts commit d1653fd046cc53b1a3a2bafe5868cf7ca98a32b5.
Issue #2151095 by joelpittet, longwave | Cottser: Convert theme_admin_page() to Twig.
Issue #2151089 by longwave, joelpittet, c4rl, IshaDakota, pplantinga, gnuget, jeanfei, sbudker1, Cottser: Convert theme_admin_block() to Twig.
Issue #2205157 by jibran, rteijeiro | sun: Convert locale.admin.css into a library.
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