Issue #2533768 by Wim Leers, lauriii: Add the user entity cache tag to user.* cache contexts that need it

Issue #2056089 by BarisW, TR, mgifford, rodvolpe, Dom., nambisolo, nod_, katewelling, Manjit.Singh, jhodgdon, Bojhan, Wim Leers: UI problems on the Modules/Extend page

Issue #2489830 by cilefen, davidhernandez, dcmul, Adam Clarey, joshi.rohit100, rpayanm, sqndr, Cottser, lauriii: Improve theme compatibility error message

Issue #2430397 by Wim Leers, Fabianx: When mapping cache contexts to cache keys, include the cache context ID for easier debugging

Issue #2513094 by hchonov, pfrenssen, mkalkbrenner, yched, Berdir: ContentEntityBase::getTranslatedField and ContentEntityBase::__clone break field reference to parent entity

Issue #2533822 by alexpott: Duplicate array keys in CssOptimizerUnitTest resulting in missing test coverage

Issue #2539310 by neclimdul, alexpott: BackendCompilerPassTest::testProcess fails when sqlite not installed

This reverts commit c523c995.

Issue #2338081 by pwolanin, dawehner, effulgentsia, kgoel, vijaycs85, mpdonadio, chx, brandon.holtsclaw, alexpott, Gábor Hojtsy, Fabianx, catch, YesCT, JvE: Local Tasks, Actions, and Contextual links mark strings from derivatives (or alter hooks) as safe and translated

Issue #2524082 by pfrenssen, Gábor Hojtsy, Wim Leers, Berdir, Fabianx, dawehner, catch: Config overrides should provide cacheability metadata

Issue #2525884 by jesperjb, joshi.rohit100, Berdir: Avoid unecessary cache tag invalidations in ConfigEntityBase and aggregator Item entity

Issue #2536644 by tim.plunkett: generate-proxy-class.php should generate the same file regardless of a missing leading slash

Issue #2409701 by tstoeckler, Leksat, Schnitzel, _nolocation, Gábor Hojtsy, xjm: Field storage configuration is not exposed to config translation UI

Issue #2527846 by dawehner, Wim Leers: Try to get rid of Url::fromRoute() in system_js_settings_alter()

Issue #2497275 by borisson_, alexpott, dawehner, Gábor Hojtsy: ~50 calls to t() for two strings in LanguageManager() on every request

Revert "Issue #2497275 by borisson_, alexpott: ~50 calls to t() for two strings in LanguageManager() on every request"

This reverts commit fe4cd2cf.

Issue #2497275 by borisson_, alexpott: ~50 calls to t() for two strings in LanguageManager() on every request

Issue #2536456 by mbovan, Berdir, Wim Leers, dawehner: Autocomplete is broken (its JS it not loaded)

Revert "Issue #2510104 by pwolanin, nod_, Fabianx, Wim Leers, droplet, Pere Orga: Convert drupalSettings from JavaScript to JSON, to allow for CSP in the future"

This reverts commit 94615a13.

Issue #2535302 by mbaynton, Berdir, kgoel, claudiu.cristea, tim.plunkett, RavindraSingh, cilefen, dawehner: Selecting too many files with JS off causes WSOD with data loss

Issue #2498599 by Cottser, naveenvalecha, webchick, karolus, cilefen: Remove sdboyer/gliph since it is unused by core

Issue #2505315 by stefan.r, dawehner, tim.plunkett, Berdir: Catch PHP7 Throwable objects instead of BaseExceptions in the error handler

Issue #2024695 by olli, SpadXIII: The "Reset" button ignores the "Use AJAX" setting (always behaves in a non-AJAX way)

Issue #2525910 by dawehner, effulgentsia, Berdir, lauriii, larowlan, timmillwood, Wim Leers, chx, arlinsandbulte, Fabianx, Gábor Hojtsy, Dave Reid, alexpott, catch: Ensure token replacements have cacheability + attachments metadata and that it is bubbled in any case

Issue #2535082 by alexpott, jhedstrom, xjm, plach, Fabianx, effulgentsia, Berdir: Allow hook_update_N() implementations to run before the automated entity updates

Issue #2493911 by dawehner, larowlan, damiankloip, hussainweb, jibran, cilefen, benjy, iMiksu, mtdowling: Update guzzle, goutte and mink-goutte-driver to the latest release

Issue #2408013 by Aki Tendo, alexpott, Fabianx, dawehner, Crell, jhodgdon, Wim Leers, aspilicious: Adding Assertions to Drupal - Test Tools