Issue #3498059 by mstrelan, shalini_jha, hetal.solanki: Add array return to all hook_requirements implementations

Issue #3477634 by mondrake, daffie: Ensure run-tests.sh and PHPUnit CLI run with the same list of tests to be executed

Issue #3477156 by quietone, mstrelan, alexpott: Use DrupalPractice.CodeAnalysis.VariableAnalysis on Functional* tests

Issue #3488109 by mstrelan, quietone: Add AccessResultInterface return type to hook_entity_access (and friends) implementations

Issue #3031367 by bradjones1, bbrala, gabesullice, wim leers, larowlan, alexpott: Generate JSON schema for content entity types

Issue #3100732 by bbrala, bradjones1, mglaman, wim leers, ptmkenny, ranjith_kumar_k_u, plach, larowlan, joachim, claudiu.cristea: Allow specifying metadata on JSON:API objects

Issue #2842949 by quietone, rigoucr, arunkumark, gaurav.kapoor, timmillwood, harsha012: Fix Drupal.Commenting.DocComment.SpacingBeforeTags coding standard

Issue #3490964 by nexusnovaz, mstrelan: Add array return to all hook_jsonapi_ENTITY_TYPE_filter_access hook implementations

Issue #3489519 by mstrelan, smustgrave, quietone: Add void return to module and theme install/uninstall hook implementations

Issue #3416522 by catch, alexpott, longwave, phenaproxima, nicxvan, wim leers, smustgrave, larowlan, berdir, godotislate, dww: Add the ability to install multiple modules and only do a single container rebuild to ModuleInstaller

Issue #3278759 by mxr576, kristiaanvandeneynde, acbramley, danflanagan8, larowlan, bbrala: Access cacheability is not correct when "view own unpublished content" is in use

Issue #3473374 by mxr576, bbrala, kristiaanvandeneynde: Improve Dynamic Page Cache header assertions in JSON:API tests

Issue #3483599 by nicxvan, ghost of drupal past, catch, longwave, fabianx: Convert all procedural hook implementations to Hook classes

Issue #3483050 by mstrelan, nicxvan: Add int return type to all hook_update_last_removed implementations

Issue #3477687 by mstrelan, quietone: Add ResponseInterface return typehints to protected test helper methods

Issue #3483057 by mstrelan, bbrala, smustgrave: Add void return type to all hook_install and hook_uninstall implementations

Issue #3470403 by mstrelan, smustgrave, quietone: Add EntityInterface return typehints to protected test helper methods

Issue #3456601 by mstrelan, xjm, smustgrave, longwave: Add void return typehints to test helper methods

Issue #3251754 by spokje, quietone, longwave, smustgrave, mallezie, mstrelan, alexpott, daffie, tstoeckler, mondrake, samaraof@ciandt.com: Use DrupalPractice.CodeAnalysis.VariableAnalysis for Kernel and Unit tests

Issue #3444257 by bbrala, mxr576, quietone, acbramley, larowlan, casey, enyug, mstrelan, nick_schuch: ResourceObjectNormalizer::getNormalization can result in max-age drift when different sets of fields are requested

Issue #2951814 by wim leers, mxr576, vakulrai, claudiu.cristea, neclimdul, alexpott, sanjayk, joachim, chi, smustgrave: Improve X-Drupal-Cache and X-Drupal-Dynamic-Cache headers, even for responses that are not cacheable

Issue #3462868 by annmarysruthy, yujiman85, nexusnovaz, pierregermain, ankitv18, sheetal-wish, smustgrave, lostcarpark, rodrigoaguilera, ultimike: Replace url usage of http://www.w3.org with https://www.w3.org in core

Issue #3110831 by bbrala, z3cka, smustgrave, mglaman, wim leers, alexpott, matthand: Method to enable a resource type field disabled by a previous ResourceTypeBuildEvent subscriber

Issue #3470203 by mstrelan, smustgrave: Add (more) bool return typehints to protected test helper methods

Issue #3275491 by dewalt, murz, pooja_sharma, avpaderno, Nicolas Bouteille, dmitry.korhov: External application is redirected to frontpage in maintenance mode

Issue #2973356 by mxr576, kristiaanvandeneynde, wim leers, berdir, bbrala: Cacheability information from route access checker access results are ignored by dynamic_page_cache

Issue #3465602 by catch, quietone, smustgrave: Order tests by number of public methods to optimize gitlab job times

Issue #3458422 by mstrelan, smustgrave: Add string return typehints to protected test helper methods