Issue #1810330 by c4doug, plach, YesCT: Remove EntityTranslationControllerInterface::removeTranslation().

Issue #2089327 by thedavidmeister, Cyberschorsch: Remove / deprecate calls to drupal_strip_dangerous_protocols() use \Drupal\Component\Utility\Url::stripDangerousProtocols().

Issue #2080391 by johnmcc, Bladedu, chertzog, jeroen12345: Remove Unused local variables from multiple core files.

Issue #2076551 by pfrenssen, pwolanin: Fixed SystemController::compactPage uses an invalid route name for the front page.

Issue #2091139 by mcrittenden, cosmicdreams: Fixed Duplicate array key comment_changed() in DefaultViewRecentComments.

Issue #2062017 by InternetDevels, rhm50, wesleydv, DeimoS: Replace user_access() calls with ->hasPermission() in rdf module.

Issue #2048827 by claudiu.cristea, tim.plunkett: Move Image toolkit API from system.module to Drupal\Core.

Issue #2067809 by Berdir, damiankloip: Fixed YamlDiscovery uses basename of directory instead of module name.

Issue #2105407 by swentel, plach: Fixed Changing language settings for fields ends in a fatal error.

Issue #2057401 by plach, socketwench, kfritsche, Damien Tournoud: Fixed Make the node entity database schema sensible.

Issue #1993728 by pfrenssen: Fixed testMenuTreeData() assert message confuses dashes and underscores.

Issue #2099467 by moshe weitzman, chx: Let non-interactive installers determine mode of files directory and its subdirectories.

Issue #2105583 by dawehner: Fixed phpunit strict mode basically kills debugging as you just have 1 second.

Issue #2104741 by Gábor Hojtsy: Fixed Quick fix: small tab inconsistencies + lack of tab conversion.

Issue #2095121 by clemens.tolboom, jibran: Ensure every path in routing.yml files has a leading slash.

Issue #2099095 by jibran, tim.plunkett: Create BreadcrumbBuilderBase and remove the boilerplate code from BreadcrumbBuilders.

Issue #2101661 by swentel: Fixed Update cache checking logic in core/includes/langauge.inc to use config system.

Issue #2080703 by chertzog | mrsinguyen: Remove Unused local variable  from /core/modules/rdf/rdf.module.

Issue #1987390 follow-up by Tim Bozeman: Correct docblock comment in aggregator-summary-item.html.twig.

Issue #2089351 by thedavidmeister, meba: Convert all calls to check_plain() in core to Drupal\Component\Utility\String::checkPlain() in core/includes.

Issue #2061967 by Maxis, sergeypavlenko, m1r1k: Remove calls to deprecated global  in overlay module.