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 #2484623 by quietone, anavarre, nod_, Manuel Garcia, rteijeiro, kostyashupenko, ankithashetty, smustgrave, jeroent, xjm, droplet, cilefen, travis-bradbury, catch: Move all JS in modules to a js/ folder

Issue #3439833 by pooja_sharma, smustgrave, vensires: Fix Content Translation tests that rely on UID1's super user behavior

Issue #3467294 by quietone, nod_, smustgrave, catch, longwave: Change string 'Modules to enable' to {@inheritdoc} in comments

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

Issue #2629508 by krishnan.n, martin107, quietone, Rassoni, akishankar, heykarthikwithu, smustgrave: Replace t() with $this->t() where StringTranslationTrait is used

Issue #3421418 by mstrelan, Spokje, xjm, mondrake, longwave, acbramley: Add void return typehints to all test methods

Issue #3057070 by joachim, Pancho, nicxvan: Refactor ImageFieldCreationTrait to support entity types other than nodes

Issue #540008 by kristiaanvandeneynde, Spokje, daffie, clayfreeman, alexpott, eelkeblok, michaelfavia, ianthomas_uk, zaporylie, johnwebdev, abhisekmazumdar, anmolgoyal74, greggles, quietone, shaal, catch, rivimey, AaronMcHale, Berdir, ndf, xjm, finne, Wim Leers, esolitos, heddn, webchick, Bojhan, andypost, efpapado, benjifisher, lauriii, Gábor Hojtsy, moshe weitzman, harings_rob: Add a container parameter that can remove the special behavior of UID#1

Issue #3436680 by mondrake: Method getMockForAbstractClass() of class PHPUnit\Framework\TestCase is deprecated in PHPUnit 10 - Step 2 ContentEntityBase

Issue #3426955 by mstrelan, sorlov, alexpott, smustgrave, godotislate: Convert ViewsField plugin discovery to attributes

Issue #3420990 by godotislate, smustgrave, alexpott, kim.pepper, longwave: Convert Constraint plugin discovery to attributes

Issue #3416304 by sleitner, RoloDMonkey, smustgrave: Javascript warning from content language and translation page

Issue #3414415 by joco_sp, nod_, RoloDMonkey, tcrawford: Content language and translation AJAX expansion is backwards

Issue #3309104 by Bhanu951, acbramley, mondrake, ravi.shankar, smustgrave, daffie, alexpott, quietone, mstrelan: Replace REQUEST_TIME in Functional and FunctionalJavascript tests

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

Issue #3353210 by mondrake, PrabuEla, Spokje: [PHPUnit 10] @dataProvider methods must be declared static and public

Issue #3418236 by mstrelan, smustgrave: Fix strict type errors: Convert remaining usages of FormattableMarkup to strings in core Functional tests

Issue #3412464 by mstrelan, smustgrave: Fix strict type errors: Convert FormattableMarkup to strings (complex replacement) in core Functional tests

Issue #2254189 by smustgrave, quietone, anya_m, andregp, sun, joachim: Fix test performance of Drupal\node\Tests\NodeTranslationUITest