Issue #2168101 by xjm: UpdateModuleHandler does not follow coding standards for switch statements and is hard to read.

Issue #2167469 by pwolanin: Test EntityViewControllerTest has the wrong descriptive text in getInfo().

Issue #2042739 by jhedstrom, bdone, dawehner, tim.plunkett: Convert system module's ControllerResolverTest to phpunit.

Issue #2159755 by damiankloip: Unit test the Drupal\serialization\EntityResolver\ChainEntityResolver class.

Issue #2041793 by mortendk, rteijeiro, LewisNyman, magnify, axe312, zorp, mdrummond: Install-page.html.twig markup and CSS.

Issue #2168113 by penyaskito, jessebeach, catch: Add leading underscore and other discouragement to drupal_add_css() and drupal_add_js().

Issue #2169067 by penyaskito: Typo in core/modules/migrate_drupal/tests/Drupal/migrate_drupal/Tests/source/d6/RoleSourceTest.php comment.

Issue #2149841 by drastik, xjm, amateescu: The 'aggregator_feed' entity type doesn't have a UUID field.

Issue #2080543 by larowlan, angel.h, grisendo, mrsinguyen: Remove unused local variables in the forum module.

Issue #2168335 by vijaycs85: Rename field.field.forum_container to field.field.forum.forum_container to match with field standard configuration.

Issue #2149827 by Xano, Mile23: Windows-1250 character encoding not supported by PHP's mbstring extension.

Issue #2157703 by andypost: Deprecate comment_int_to_alphadecimal() & comment_alphadecimal_to_int() in favour of methods in Number component.

Issue #2074475 by benjy, Gábor Hojtsy: Rename {file_managed}.timestamp to 'changed' and add a created timestamp.

Issue #1887654 by tim.plunkett, damiankloip, Berdir, marthinal, xjm: Creating a config entity with an existing machine name shouldn't work.

Issue #2168153 by chx: Add warning to Variable class that it is not a good class to use as a source class example

Revert "Issue #1979468 by Wim Leers, pwolanin, nod_, thedavidmeister, larowlan: .active from linkGenerator(), l() and theme_links() forces an upper limit of per-page caching for all content containing links."

This reverts commit 624296e7.

Issue #2110643 by amateescu, dawehner: ControllerBase::container() and FormBase::container() needs to be private.

Issue #2105915 by vijaycs85, foxtrotcharlie: Make sure all YML files in Block module has no type-casting to string.

Issue #2105991 by nonsie, danilenko_dn, vijaycs85: Make sure all YML files in Statistics module has no type-casting to string.