Issue #3401730 by kim.pepper, smustgrave, longwave: Add default autoconfigure to all *.services.yml and remove event_subscriber tags

Issue #3379991 by kristiaanvandeneynde, BramDriesen: Adjust variation_cache.dynamic_page_cache declaration to follow suit

Issue #2551419 by kristiaanvandeneynde, catch, dawehner, Wim Leers, borisson_, bradjones1, tstoeckler, andypost: Abstract RenderCache into a separate service that is capable of cache redirects in a non-render array-specific way

Issue #3114785 by slootjes, longwave: [Symfony 5] Update deprecated short factory configurators in Yaml

Issue #2429617 by Wim Leers, Fabianx, Berdir, yched, dawehner, effulgentsia, catch, borisson_, jhodgdon, martin107, torgosPizza: Make D8 2x as fast: Dynamic Page Cache: context-dependent page caching (for *all* users!)