Issue #2121839 by brantwynn: Fixed Typo:  'Creation' not 'creaation' in custom_block().module docblock.

Issue #1987806 by kim.pepper, disasm, vijaycs85, tim.plunkett: Convert search_view() to a new style controller.

Issue #2115829 by Xano: Fixed ConfigurableEntityReferenceItem::instanceSettingsFormValidate() does not typehint its arguments.

Issue #2097691 by plopesc, amateescu: Move FIELD_CARDINALITY_UNLIMITED constant to FieldDefinitionInterface.

Issue #1872206 by jessebeach, quicksketch, Wim Leers, mgifford: Fixed Improve CKEditor toolbar configuration accessibility.

Issue #2109065 by ianthomas_uk, jhodgdon: Fixed Remove variable_get() and variable_set() calls from API documentation.

Issue #2099577 by thamas, nod_, yoroy, Gábor Hojtsy: First installer page has initially needless description for how translations are handled.

Issue #2033959 by borisbaldinger, Gábor Hojtsy, thamas, YesCT: Improve design of language detection and selection settings page.

Issue #2100351 by grisendo, pfrenssen, Gábor Hojtsy, YesCT, penyaskito: Fixed Date format name 'custom' is reserved but not checked for.

Issue #2057259 by alexpott, cweagans, swentel: Fixed Malformed modulename.info.yml file causes fatal error.

Issue #2099363 by tim.plunkett, mtift, swentel: Allow single config files to be imported and exported (Resolve regression from Views in Drupal 7).

Issue #2102467 by InternetDevels, sidharthap | vijaycs85: Remove drupal_set_title() in path module controllers.

Issue #2078879 by pwolanin, dawehner, Xano: Fixed DerivativeDiscoveryDecorator doesn't check/enforce the proposed derivative fetchers implement interface DerivativeInterface.

Issue #1934498 by attiks, Jelle_S, David_Rothstein, effulgentsia, tstoeckler: Allow the image style 'itok' token to be suppressed in image derivative URLs.

Issue #1988508 by katbailey, aspilicious, dawehner: Stop pretending we support Symfony bundles when we really just have service providers.

Issue #2028039 by ParisLiakos, jsbalsera, undertext, mcrittenden, xeniak, amateescu: Expand ItemInterface (aggregator.module) with methods.

Issue #2113015 by Wim Leers, amateescu: Add drupal_merge_attached() function, to merge #attached assets.

Issue #1975962 by Wim Leers, jibran, c4rl, amateescu: Move comment_links() into CommentRenderController.

Issue #2102125 by dawehner, tim.plunkett, neclimdul, pwolanin, YesCT, damiankloip, Tim Bozeman: Big Local Task Conversion.

Issue #2019911 by johnmcc: Add install requirement that open_basedir() = Off since 8.x currently doesn't support it.

Issue #2062183 by cloud2006, LinL, m1r1k, likin: Remove calls to deprecated global  in core/modules/user/lib/Drupal/user/AccountFormController.php.

Issue #2113441 by damiankloip: Move remaining views.module helper functions to Drupal\views\Views class.

Issue #1951386 by benjy, theduke, andypost, tim.plunkett: Fixed Extend BlockPluginInterface::access to allow passing in an account.

Issue #2102441 by sidharthap, -enzo-, InternetDevels, rteijeiro: Remove drupal_set_title() in config module controllers.

Issue #2095943 by dotoree, Tim Bozeman: Core modules and themes missing the version attribute in info.yml.

Issue #2091335 by lostkangaroo, cosmicdreams, batigolix, yingtho, neclimdul: Fix up hook_help for the help module