Issue #2008970 by markie, adamcowboy: Replace theme() with drupal_render() in aggregator module.
Issue #2012812 by thedavidmeister, pwieck: drupal_render() can't distinguish between empty strings from theme() from an implemented hook and no hook being matched.
Issue #2012818 by thedavidmeister: Remove #type 'markup'.
Revert "Issue #2012812 by thedavidmeister, pwieck: drupal_render() can't distinguish between empty strings from theme() from an implemented hook and no hook being matched."

This reverts commit 431dc2e3f1371611fc243ef30df26802806670fc.
Issue #1853526 by dawehner, damiankloip, jibran, xjm: Reintroduce Views integration for contact.module.
Issue #2018257 by tsphethean: Move batch storage to Drupal\Core\Batch.
Issue #1872876 by chx, fubhy, dawehner, alexpott, tim.plunkett: Turn role permission assignments into configuration.
Issue #1945226 by YesCT, tstoeckler, kfritsche, babruix, IshaDakota, helenkim: Add language selector on menus.
Issue #2024111 by damiankloip: Fixed TaxonomyIndexTid filter handler autocomplete does not work.
Issue #1869600 by linclark, scor, jesse.d: Refactor RDF mappings to be inline with the new Entity Field API.
Issue #1869600 by tim.plunkett: Fixed broken head.
Issue #1990156 by damiankloip: Add a dedicated @Condition plugin annotation.
Issue #1969728 by yched, effulgentsia, swentel, fago, plach: Implement Field API 'field types' as TypedData Plugins.
Issue #2027183 by tim.plunkett, YesCT: hook_menu() title callback is ignored on routes.
Issue #1987124 by tim.plunkett, h3rj4n, dawehner: Convert filter_admin_format_page() and filter_admin_overview() to a Controller.
Issue #2026255 by Wim Leers: Make CascadingStylesheetsTest 3500% faster.
Revert "Issue #1987124 by tim.plunkett, h3rj4n, dawehner: Convert filter_admin_format_page() and filter_admin_overview() to a Controller."

This reverts commit af5478b8638be48e4e0738f4e0cda289e0862829.
Issue #2024867 by vijaycs85: Rename translation_entity() to content_translation().
Issue #2026367 by Berdir: Use static caches for parsed .services.yml and .info.yml files.
Issue #2021829 by damiankloip, olli: Fixed Redundant executeView() in ViewsBlock::build().