Issue #2350301 by mitrpaka: Replace extend of deprecated DrupalUnitTestBase with KernelTestBase in Contextual.

Issue #2226207 by lauriii, mgbellaire, Cottser, m1r1k, Mark Carver, LinL, rachel_norfolk, rteijeiro, skwashd, davidhernandez, euphoric_mv: Make 'template' the default output option for hook_theme().

Issue #2329901 by lanchez, lauriii | davidhernandez: Move form classes from preprocess to templates.

Issue #2343677 by damiankloip, znerol, Fabianx, pounard: Fixed Stack middleware suffers from incomplete service construction.

This reverts commit 39eb84fc.

Revert "Issue #2343677 by damiankloip, znerol, Fabianx: Fixed Stack middleware suffers from incomplete service construction."

This reverts commit c033857b.

Issue #2346791 by rpayanm, Palashvijay4 | thamas: Remove id selectors from page template of Seven  .

Issue #1946240 by eiriksm, David_Rothstein, Yaron Tal, madhusudanmca, rszrama: Remove the hardcoded 0 index in status-messages.html.twig.

Issue #2343677 by damiankloip, znerol, Fabianx: Fixed Stack middleware suffers from incomplete service construction.

Issue #2350915 by pwolanin: Don't require bundle option to be passed in when creating a MenuLinkContent entity.

Issue #2337379 by skippednote, BarisW, derjochenmeyer, herom, ChandeepKhosa, kiliweb, sqndr, Palashvijay4 | LewisNyman: Rename 'branding' to 'content-header'.

Issue #2267551 by jfhovinne, ParisLiakos, catch: PHP 5.4.5 needed to avoid zend failure when using autoloaded traits.

Issue #2346315 by Désiré, amateescu: Fixed Translated entity references not rendered in the entity display language.

Issue #2270251 by yvesvanlaer | Bojhan: Unwanted box around CKEditor, i.e. our CSS overrides no longer work (presumably since CKEditor 4.4 upgrade).

Issue #2345879 by marcvangend: Added Enhance ThirdPartySettingsTrait with a get-all-settings method.

Issue #1922966 by jibran, damiankloip: Remove 'bool' and 'translatable' key from option definitions.

Issue #2337825 by YesCT, martin107, mon_franco: Update comment references to the interface for ConfigurableLanguage class due to the ConfigurableLanguageInterface (followup).

Issue #2350461 by mradcliffe, chx, David_Rothstein: Fixed issues with UpdateComplexTest in PostgreSQL driver.

Issue #2347711 by yched, undertext: Fixed FieldItemlListInterface::processDefaultValue($default_value) is expected to massage polymorphic data.

Issue #2175637 by Wim Leers: Touch support for the toolbar: greatly improves the UX of Toolbar on mobile devices.

Issue #2349879 by damiankloip: Fixed Remove unnecessary call to serializer > normalize in XmlEncoder::encode.

Issue #2229435 by lauriii, joelpittet, Rade: Clean up the way attributes are printed in field.html.twig.

Revert "Issue #1842140 by mdrummond, tonystar, gavin.hughes, killerpoke, lauriii, droweski, stevector, omg-its-maggie, jenlampton, Renee S: Remove title and wrapper div from theme_item_list."

This reverts commit 79395676.

Issue #2230091 by dawehner, Berdir, marthinal, martin107: Fixed Route rebuilding is not guaranteed to finish in time for the next request.

Issue #2201789 by joelpittet, jjcarrion, stefanos.petrakis, wiifm, Geizt, lussoluca | Cottser: Don't print '_theme()' in twig_debug output.