Issue #2222049 by LewisNyman, Michael Hodge Jr, sqndr: Add a .csslintrc file that's in line with our CSS standards.

Issue #2285245 by Devin Carlson, martin107, swentel, mducharme: Fixed Missing "Save" button on shortcut links list.

Issue #2327095 by tstoeckler: Document how to allow test module and theme installation in example.settings.local.php.

Issue #2096703 by mondrake, tim.plunkett | tstoeckler: Image toolkits should use PluginFormInterface and ContainerFactoryPluginInterface.

Issue #2321393 by damiankloip, undertext: Fixed Unable to pass function name to '_content' property of the route.

Issue #2250315 by dawehner, pwolanin: Fixed Regression: Bring back node access optimization to menu trees.

Issue #2330751 by dawehner, chx: Fixed Random test failures everywhere due to ->with(Request::create()).

Issue #2241275 by Wim Leers: DateFormat cache tag: don't set the cache tag, but invalidate the entire render cache?.

Issue #2260121 by sun: PHPUnit Tests namespace of modules is ambiguous with regular runtime namespace (+ Simpletest tests).

Issue #2271349 by Berdir, Arla, blueminds, larowlan, Dave Reid: Node and Comment ops links should be display components (which can be disabled).

Issue #2293205 by Berdir | tim.plunkett: Consider removing usage of DataDefinition in ContextHandler.

Issue #2330121 by plach, effulgentsia, fago: Replace ContentEntityDatabaseStorage::getSchema() with a new EntityTypeListenerInterface implemented by SqlContentEntityStorageSchema.

Issue #2331991 by Gábor Hojtsy, vijaycs85, dawehner: Tests for Theme missing when installing in non-English language.

Issue #2317557 by dawehner, Cottser, joelpittet, jhodgdon: Fixed renderInline not compatible with twig_auto_reload.

Issue #2329795 by fietserwin, bzitzow, alexrayu, tstoeckler | illutek, dawehner: Fixed Make it possible to add information to theme info files during development.

Issue #2303673 by dawehner, damiankloip, effulgentsia, Fabianx: Implement stackphp; cleanup handlePageCache() and preHandle()

Issue #2320037 by Gábor Hojtsy: Fixed Non-fieldable entities (with only base fields) cannot be configured translatable, eg. shortcuts.

Revert "Issue #2154775 by er.pushpinderrana, barnettech, kirkkala, InternetDevels | Wim Leers: Fixed In-place editing of title: works, but cursor is invisible."

This reverts commit 3973634d.

Issue #2326949 by plach, effulgentsia: Move entity-type-specific schema information from the storage class to a schema handler.

Issue #2330503 by pfrenssen, dawehner: Fixed [sechole] Inline templates pass through unsafe strings.

Issue #2248767 by effulgentsia, beejeebus, alexpott: Use fast, local cache back-end (APCu, if available) for low-write caches (bootstrap, discovery, and config).

Issue #2202185 by Wim Leers, effulgentsia, msonnabaum, damiankloip, alexpott: Statically cache Role entities to speed up (User|UserSession)::hasPermission().