Issue #2387669 by rpayanm, joachim, tadityar: ConfigInstallWebTest is broken
Issue #2389287 by dawehner: Missing PhpExecutableFinder
Issue #2369225 by mpdonadio: Add $options['base_url'] to UrlGenerator::generateFromRoute()
Issue #2382533 by Wim Leers: Attach assets only via the asset library system
Issue #2335879 by alexpott, dixon_, Wim Leers, chx, mauzeh, ygerasimov, jeqq: Change SqlContentEntityStorageSchema::requiresEntityDataMigration() to ask the old storage handler if it has data rather than assuming yes unless NULL storage