Issue #3263126 by longwave, bbrala: Avoid unnecessary installs when testing JSON:API on config entities

Issue #3261486 by catch, longwave, dww: Remove core updates added prior to 9.3.0 and adjust test coverage

Issue #3164210 by jungle, sylus, Akhildev.cs, dww: Refactor array_merge() usage in loops as possible for performance

Issue #3219649 by quietone, murilohp, longwave: Fix spelling for words used once, beginning with 'q' -> 's', inclusive

Issue #3162981 by murilohp, andypost, quietone, paulocs, lucienchalom, longwave, daffie, catch: [Symfony 6] Use Symfony\Component\HttpFoundation\InputBag where appropriate instead of ParameterBag

Issue #3106216 by Spokje, longwave, alexpott, apaderno, Hardik_Patel_12, daffie: Remove unused variables from core

Issue #3175287 by murilohp, quietone, SivaprasadC, ankithashetty, anmolgoyal74, sarvjeetsingh, xjm, longwave: Remove accidentally duplicated words in code comments

Issue #3210129 by quietone, murilohp, xjm: Fix spelling for words used once, beginning with 'a' -> 'd', inclusive

Issue #3131348 by Spokje, jungle, mondrake, vsujeetkumar, sja112, kishor_kolekar, Hardik_Patel_12, mrinalini9, yogeshmpawar, daffie: Replace assertions involving calls to empty() with assertEmpty()/assertNotEmpty()/assertArrayNotHasKey()

Issue #3049048 by danflanagan8, ndobromirov, mglaman, bbrala, alexpott, Wim Leers, gabesullice: Invalid JSON:API responses when maintenance mode is on

Issue #3252872 by bbrala, gabesullice, bradjones1, alexpott: Use CacheableSupportsMethodInterface for performance improvement in jsonapi normalizers

Issue #3199696 by bbrala, Wim Leers, plach, bradjones1, gabesullice: Add language support to ResourceObject

Issue #3254250 by Spokje, longwave, catch, daffie: [Symfony 6] Retrieving a non-string value from "Symfony\Component\HttpFoundation\InputBag::get()" is deprecated

Issue #3232097 by daffie, longwave: [Symfony 6] Add "array" type hint to methods overriding Symfony\Component\EventDispatcher\EventSubscriberInterface::getSubscribedEvents()

Issue #3254331 by paulocs, longwave: [Symfony 6] Add "array|string|int|float|bool|\ArrayObject|null" to all Normalizer classes that implement the method ::normalize()

Issue #3182103 by TR, dan2k3k4, longwave, mondrake, Sweetchuck, Kristen Pol: Ensure correct signature for setUp(), tearDown(), setUpBeforeClass(), and assertPostConditions() methods

Issue #3232080 by paulocs, daffie, longwave: [Symfony 6] Add "mixed" type hint to all Normalizer classes that implement the method ::denormalize()

Issue #3232063 by paulocs, daffie, longwave: [Symfony 6] Add "bool" type hint to Drupal\serialization\Normalizer\NormalizerBase::supportsNormalization() and subclasses

Issue #3138078 by mondrake, larowlan, longwave, xjm: [D9.3 beta - w/c Nov 8, 2021] Add a 'void' return typehint to custom assert* methods

Issue #3231040 by alexpott, Anul, longwave, bbrala, catch: (revert) Remove DependencySerializationTrait from JSON API exceptions

Issue #3207567 by Spokje, quietone, guilhermevp, yogeshmpawar, daffie, alexpott: Fix Drupal.Commenting.FunctionComment.MissingParamComment

Issue #3248810 by daffie: [Symfony 6] The Drupal\Tests\jsonapi\Kernel\EventSubscriber\ResourceObjectNormalizerCacherTest fails with Symfony 5

Issue #3248801 by daffie, rakesh.gectcr, bbrala, longwave: [Symfony 6] The Drupal\Tests\jsonapi\Functional\JsonApiFunctionalTest fails with Symfony 5

Issue #3231781 by longwave, mondrake, Feuerwagen, larowlan, TR, nlisgo, xxAlHixx, DuaelFr, GoZ, benjy, no_angel, Mac_Weber: [D9.3 beta - w/c Nov 8, 2021] Remove remaining uses of t() in tests

Issue #3222769 by bbrala, alexpott, longwave, Matroskeen: [November 8, 2021] Replace all list (array destructuring) assignment to the array syntax

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

Issue #3232074 by bbrala, daffie, alexpott, effulgentsia, catch, gabesullice: [Symfony 6] Add "array|string|int|float|bool|\ArrayObject|null" to all Normalizer classes that implement the method ::normalize()

Revert "Issue #3232074 by bbrala, daffie, effulgentsia, catch, gabesullice, alexpott: [Symfony 6] Add "array|string|int|float|bool|\ArrayObject|null" to all Normalizer classes that implement the method ::normalize()"

This reverts commit 9aa1d53c.

Issue #3232074 by bbrala, daffie, effulgentsia, catch, gabesullice, alexpott: [Symfony 6] Add "array|string|int|float|bool|\ArrayObject|null" to all Normalizer classes that implement the method ::normalize()

Issue #3043321 by jibran, acbramley, ravi.shankar, Manuel Garcia, johnwebdev, dpi, kim.pepper, mstrelan, NWOM, AaronMcHale, larowlan, Berdir, Wim Leers, kristiaanvandeneynde, bbrala, catch: Use generic access API for node and media revision UI

Issue #3083561 by Grimreaper, raman.b, ankithashetty, mglaman, bbrala, Wim Leers, quietone: Add explicit test coverage for JSON:API filtering on a datetime field

Issue #3228000 by bbrala, larowlan, GuyPaddock, Wim Leers, bradjones1, alexpott, catch, e0ipso: Users deleted via JSON:API DELETE don't follow the site-wide cancel_method in the user settings

Issue #3232673 by alexpott, longwave, Berdir, andypost: \Drupal\Core\Entity\EntityInterface::label() can return a NULL

Issue #3238452 by alexpott: Exception messages must default to an empty string not a NULL for PHP 8.1

Issue #3236284 by alexpott: Passing request headers to string functions causes deprecations in PHP 8.1