Issue #2241229 by Wim Leers: Aggregator Feed & Item content entity types, and AggregatorFeedBlock should use cache tags.

Issue #597236 by Berdir, catch, msonnabaum, Xano, Wim Leers, jhedstrom, amateescu, corvus_ch, swentel, moshe weitzman, Gábor Hojtsy, riccardoR, killes@www.drop.org, et al: Add entity caching to core.

Issue #1825952 by Fabianx, joelpittet, bdragon, heddn, chx, xjm, pwolanin, mikey_p, ti2m, bfr, dags, cilefen, scor, mgifford: Turn on twig autoescape by default

Issue #2304965 by longwave | klausi: Fixed Port form_select_options() XSS fix from SA-CORE-2014-003.

Issue #2303823 by tim.plunkett, jmolivas: Remove service definition for controller.entityform from core/core.services.yml.

Issue #2285189 by Jose Reyero, Gábor Hojtsy: Fixed Undefined config schema type should not be explicitly used in config schemas.

Issue #2298319 by Berdir | ivanjaros: Fixed views.display.block.allow should be a sequence not a boolean.

Issue #2072897 by jayeshanandani, marcingy, herom, er.pushpinderrana, inket: Modernize contact.module forms.

Issue #2301273 by pwolanin, dawehner, Wim Leers, effulgentsia, joelpittet, larowlan, YesCT, kgoel: MenuLinkNG part2 (no UI or conversions): MenuLinkTree API and unit tests.

Issue #2295737 by Gábor Hojtsy, vijaycs85, alexpott: Fixed Not all shipped configuration passes validation even with all modules enabled.

Issue #2297681 by cilefen, Wim Leers, cs_shadow | Charles Belov: Added Make the "alt" attribute required in EditorImageDialog.

Revert "Issue #2033211 by LewisNyman, tim.plunkett, JamesLefrère | yannickoo: Move Seven CSS files into css directory."

This reverts commit 16e60c42.

Issue #2010246 by tim.plunkett, tkuldeep17, plopesc, InternetDevels, pfrenssen, googletorp: Convert update_manager_install_form, update_manager_update_form, update_manager_update_ready_form to the new form interface.

Issue #2290255 by Wim Leers, er.pushpinderrana, amitgoyal: Make developer info for CKEditor plugins more discoverable

Issue #2299421 by amitgoyal, joshi.rohit100: Remove all usage of drupal_build_form() as deprecated and replaced by FormBuilderInterface::buildForm().

Issue #2279213 by neclimdul, sun | donquixote: Fixed KernelTestBase::unregisterStreamWrapper() is called once with insufficient arguments.

Issue #2178651 by ianthomas_uk: Fixed Consider UX implications of indexed vs non-indexed search pages.

Issue #1978926 by likin, YesCT, Pancho, kim.pepper, h3rj4n, tim.plunkett, disasm, Luxian, neetu morwani | vijaycs85: Convert locale_translation_status_form to a Controller.