Issue #338403 by klausi, jhodgdon, grisendo, YesCT, drewish: Use {@inheritdoc} on all class methods (including tests).
Issue #421294 by superspring: Fixed non-ascii character in function theme_user_signature()().
Issue #2116827 by Wim Leers: Speed up RenderTest: move integration tests into separate test.
Issue #2107137 by dawehner, damiankloip, tim.plunkett: Fix the DX for declaring custom access checkers.
Issue #2115077 by longwave: Remove unused _block_themes_access().
Issue #2112233 by alexpott, amateescu: Remove unnecessary ternaries in around config()->get().
Issue #2080617 by slv_: Remove Unused local variable  from /core/modules/field/field.form.inc.
Issue #2091385 by lostkangaroo, batigolix, dietmarg, tankerjoe: Fix up hook_help for book module
Issue #2091335 by lostkangaroo, cosmicdreams, batigolix, yingtho, neclimdul: Fix up hook_help for the help module
Issue #2102141 by xjm: Change formatting in MAINTAINERS datatabase section for better parsing
Issue #2095943 by dotoree, Tim Bozeman: Core modules and themes missing the version attribute in info.yml.
Issue #2102441 by sidharthap, -enzo-, InternetDevels, rteijeiro: Remove drupal_set_title() in config module controllers.
Issue #2073957 by herom, joelpittet, -enzo-: Remove useless 'early render' in Comment Module.
Issue #1951386 by benjy, theduke, andypost, tim.plunkett: Fixed Extend BlockPluginInterface::access to allow passing in an account.
Issue #2110777 by larowlan, herom: Fixed Cannot edit a date format after creating it.
Issue #2108643 by ParisLiakos: Fixed AttributeTest fails when using debian's phpunit binary.
Issue #2113441 by damiankloip: Move remaining views.module helper functions to Drupal\views\Views class.
Issue #2062183 by cloud2006, LinL, m1r1k, likin: Remove calls to deprecated global  in core/modules/user/lib/Drupal/user/AccountFormController.php.
Issue #2019911 by johnmcc: Add install requirement that open_basedir() = Off since 8.x currently doesn't support it.
Issue #2102125 by dawehner, tim.plunkett, neclimdul, pwolanin, YesCT, damiankloip, Tim Bozeman: Big Local Task Conversion.