Issue #2099095 by jibran, tim.plunkett: Create BreadcrumbBuilderBase and remove the boilerplate code from BreadcrumbBuilders.
Issue #2095121 by clemens.tolboom, jibran: Ensure every path in routing.yml files has a leading slash.
Issue #2104741 by Gábor Hojtsy: Fixed Quick fix: small tab inconsistencies + lack of tab conversion.
Issue #2105583 by dawehner: Fixed phpunit strict mode basically kills debugging as you just have 1 second.
Issue #2104123 by damiankloip: Consolidate test methods in MenuRouterTest.
Issue #2056607 by Mile23, becw: Fixed /core/phpunit.xml.dist only finds top-level contrib modules.
Issue #2099467 by moshe weitzman, chx: Let non-interactive installers determine mode of files directory and its subdirectories.
Issue #2027115 by dawehner, tim.plunkett: Allow views to override existing routing items.
Issue #2029569 by AjitS, tim.plunkett: Convert node_admin_nodes() to a new-style Controller.
Issue #2106459 by chx: Fixed core config has everything as string.
Issue #2089511 by RoSk0, tim.plunkett: Convert info file configure link to route name.
Issue #1993728 by pfrenssen: Fixed testMenuTreeData() assert message confuses dashes and underscores.
Issue #2099471 by clemens.tolboom: Report the total number and modal tips tests.
Issue #2105621 by claudiu.cristea: Inject config factory service into image toolkit manager.
Issue #2107151 by claudiu.cristea: Add claudiu.cristea to core maintainers for image.
Issue #2057401 by plach, socketwench, kfritsche, Damien Tournoud: Fixed Make the node entity database schema sensible.
Issue #2105407 by swentel, plach: Fixed Changing language settings for fields ends in a fatal error.
Issue #2067809 by Berdir, damiankloip: Fixed YamlDiscovery uses basename of directory instead of module name.
Issue #2106709 by tim.plunkett: Remove legacy router backwards compatibility layer.
Issue #2048827 by claudiu.cristea, tim.plunkett: Move Image toolkit API from system.module to Drupal\Core.