Issue #2078867 by tim.plunkett, jackbravo, ianthomas_uk, InternetDevels, piyuesh23, disasm, nano_monkey | vijaycs85: Convert _form_test_* functions to classes.

Issue #2257519 by sun, larowlan, xjm, cs_shadow: Move content assertion methods into a trait, so DUTB can consume it, too.

Issue #2279681 by mgifford, joshi.rohit100, thedavidmeister: Views' InOperator filter should use Unicode::truncate() in adminSummary().

Issue #2242405 by mikebarkas, jlbellido | alexpott: Fixed FileTransfer::connect is protected yet the implementations are public and this is relied upon.

Issue #2035317 by andypost, hussainweb | dawehner: DateTimeDefaultWidget should implement ContainerFactoryPluginInterface.

Issue #2076325 by neclimdul, Mile23, alexpott: Fixed Drupal\Component\Utility\Url::externalIsLocal() is wrong in common cases.

Issue #2239969 by znerol, alexpott, neclimdul, sun: Fixed session of (UI) test runner leaks into web tests.

Issue #2298993 by alexpott, tim.plunkett: Fixed routes using _entity_list wrongly are marked for upcasting.

Issue #2234159 by alexpott: Fixed config importing through the UI and change ConfigImportAll test using the UI.

Issue #2293773 by Gábor Hojtsy, alexpott, penyaskito: Fixed migrations use dots in key names - not allowed in config.

Issue #2292115 by slashrsm: Fixed Comment statistics is no correctly loaded into entity object if more than 1 comments field.

Issue #2297631 by martin107: Nudge contrib into overriding \Drupal\Core\TypedData\TypedData::setValue() consistently.

Issue #2281475 by roderik, slashrsm: Deprecate comment_new_page_count() and move it functionality into Comment storage controller.

Issue #2281699 by er.pushpinderrana, joshi.rohit100, esod | mirie: Fixed Update @see user_cancel_form() comments.

Issue #2292197 by er.pushpinderrana, chx, LinL, cs_shadow: Fixed The StringTranslationTrait trait doxygen could use a little love.

Issue #2231595 followup by yched | catch: Add a cache backend that checks an inconsistent cache, then falls back to a consistent cache backend.

Issue #1452896 by Mile23, marthinal, Freso, kid_icarus, alexpott, tim.plunkett, jhodgdon: Fixed PHP notice in clickLink if link does not exist.

Issue #2291721 by alexpott: Use methods instead of array access in when using DataDefinition objects from TypedConfig .

Issue #2231595 by beejeebus, Steven Merrill, kim.pepper, Wim Leers, msonnabaum: Add a cache backend that checks an inconsistent cache, then falls back to a consistent cache backend.