Issue #3438424 by catch, Berdir, alexpott, longwave: [random test failures] Race condition in state when individual keys are set with an empty cache

Issue #2575105 by Berdir, catch, longwave, quietone, kristiaanvandeneynde, andypost, alexpott, mathilde_dumond, pradhumanjain2311, amateescu, Wim Leers, xjm: Use cache collector for state

Issue #3048495 by jonathan1055, quietone, rajandro, Spokje, Pooja Ganjage, andypost, kishor_kolekar, msuthars, munish.kumar, ankithashetty, ayushmishra206, ravi.shankar, naveenvalecha, longwave, Gábor Hojtsy, alexpott, smustgrave, Lendude, xjm, adityasingh, daffie: Fix Drupal.Semantics.FunctionTriggerError coding standard

Issue #3358336 by kim.pepper, rpayanm, andypost, longwave, smustgrave, Wim Leers, catch: Deprecate _drupal_flush_css_js() and create a new AssetQueryString cache service

Issue #3346645 by jweowu, catch, smustgrave: Eliminate anti-pattern isset($arr[$key]) || array_key_exists($key, $arr)

Issue #3222251 by bbrala, longwave: [November 8, 2021] Replace all isset constructs with the null coalescing operator

Issue #2884223 by kiamlaluno, Dinesh18: In \Drupal\Core\State\State, parent::delete($key) is called twice

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2834580 by Berdir: Move locale.translation_status state key to a separate key/value collection

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #1786490 by Berdir, amateescu, damiankloip, Wim Leers, dawehner: Add caching to the state system.

Revert "Issue #1786490 by Berdir, amateescu, damiankloip, dawehner: Add caching to the state system."

This reverts commit 8ec847cc.