Issue #2474909 by alexpott, mpdonadio, znerol, catch, Wim Leers, Berdir: Allow Simpletest to use the same APC user cache prefix so that tests can share the classmap and other cache objects

Issue #2479593 by jhedstrom, zaporylie: Use User::getAnonymousUser() in DblogController::eventDetails()

Issue #1942682 by zaporylie, deadbeef, jhedstrom, dawehner: Blank detail view in dblog for deleted users

Issue #2478443 by Wim Leers: Set the 'is-active' class for anonymous users in a Response Filter instead of a #post_render_cache callback

Issue #2468873 by pfrenssen, Dom., dawehner, znerol, xjm: Test that the authentication provider doesn't leak authentication credentials from the previous request

Issue #2449457 by Anushka-mp, sasanikolic, Berdir, plach: inconsistent checks in content_translation

Issue #2450251 by alexpott, xjm, sasanikolic, Berdir: Bundle cache is not invalidated after changing translation settings

Issue #2405165 by yched, alexpott, xjm: Entity::setOriginalId() does enforceIsNew(FALSE), that is wrong for ConfigEntities

Issue #2123251 by Jelle_S, marcvangend, attiks, Sutharsan: Improve DX of responsive images; convert theme functions to new #type element

Issue #2408513 by MathieuSpil, Manjit.Singh, Vidushi Mehta, svendecabooter, LewisNyman, emma.maria: Refactor forum module CSS files inline with our CSS standards

Issue #2463009 by Wim Leers: Introduce CacheableResponseInterface: consolidate ways of setting X-Drupal-Cache-Tags/Contexts headers

Issue #2478247 by Mile23: SIMPLETEST_BASE_URL is an environmental requirement which should not fail tests

Revert "Issue #2429443 by vijaycs85, rteijeiro, penyaskito, gloob, xjm, nod_, geertvd, Wim Leers, Gábor Hojtsy, Fabianx, pjonckiere, tim.plunkett: Date format form is unusable"

This reverts commit 37e278b4.

Issue #2466585 by Wim Leers, Fabianx: Decouple cache implementation from the renderer and expose as renderCache service

Issue #2400143 by geertvd, pcambra, koence, pjonckiere: Bulk form actions display action message in the confirmation form

Issue #2429443 by vijaycs85, rteijeiro, penyaskito, gloob, xjm, nod_, geertvd, Wim Leers, Gábor Hojtsy, Fabianx, pjonckiere, tim.plunkett: Date format form is unusable

Issue #2432585 by almaudoh, znerol, dawehner, cpj: Improve authentication manager service construction to support custom global service providers

Issue #2322195 by rpayanm, nlisgo, cilefen, balagan, LinL, akashjain132, filijonka, epari.siva, Tebro, Temoor, pcambra, unstatu, Poornima3, Shivam Agarwal, abhi170893, Dom., PieterJanPut, Mile23, JeroenT, disasm: Replace all instances of user_load(), user_load_multiple(), entity_load('user') and entity_load_multiple('user') with static method calls

Issue #2475805 by tstoeckler, googletorp, webwarrior: menu_ui_form_node_form_submit() is called when the Preview button is pressed which fatals

Issue #2425535 by lucaslg, balagan, tim.plunkett, lucaschain, nicoloye, pjonckiere, akalata, mondrake: No pager shows on taxonomy overview pages

Issue #2350569 by webflo, alexpott, tim.plunkett: Allow external update of ConfigEntity properties that are associated with a PluginCollection

Issue #2472269 by martin107, Xano, derhasi: Fix syntax errors in Drupal\Component\Plugin's composer.json, Add test