Issue #3341682 by Wim Leers, phenaproxima, borisson_, catch, alexpott: New config schema data type: required_label

Issue #3284270 by alexpott, bircher: Reset \Drupal\Core\Config\ConfigImporter::$errors in ::validate() method

Issue #3133162 by jungle, ravi.shankar, Deepak Goyal, Neslee Canil Pinto, anmolgoyal74, xjm, Kristen Pol: Replace the start verb Test with Tests in method comments of tests

Issue #3131281 by mondrake, rahulrasgon, longwave, ridhimaabrol24, naresh_bavaskar, jungle, daffie: [May 17th 2021] Replace assertEqual() with assertEquals()

Issue #3193955 by mondrake, daffie, catch: Swap assertEqual arguments in preparation to replace with assertEquals

Issue #2822382 by voleger, pfrenssen, erozqba, jungle, RytoEX, borisson_, jofitz, shashikant_chauhan, sidharthap, dawehner, xjm, kiamlaluno, catch, daffie, klausi: Make every $modules property protected on classes extending BrowserTestBase and KernelTestBase

Issue #3107732 by mondrake, longwave, swatichouhan012, salah1, xjm, catch, alexpott, Berdir: Between April 13 and April 17, 2020: Add return typehints to setUp/tearDown methods in concrete test classes

Revert "Issue #2822382 by voleger, pfrenssen, erozqba, RytoEX, borisson_, sidharthap, Jo Fitzgerald, shashikant_chauhan: Make every  property protected on classes extending BrowserTestBase and KernelTestBase"

This reverts commit 69501f30.

Issue #2822382 by voleger, pfrenssen, erozqba, RytoEX, borisson_, sidharthap, Jo Fitzgerald, shashikant_chauhan: Make every  property protected on classes extending BrowserTestBase and KernelTestBase

Issue #2788777 by alexpott, bircher, jribeiro, Eli-T, mpotter, douggreen, GoZ, DamienMcKenna, Dane Powell, jibran, szeidler, Alumei, andypost, dawehner, johndevman: Allow a site-specific profile to be installed from existing config

Issue #2900019 by tim.plunkett, joelpittet: \Drupal\content_moderation\EventSubscriber\ConfigImportSubscriber causes errors when importing any non-workflow config

Issue #2830740 by timmillwood, amateescu, Sam152, alexpott, martin107, plach, catch: Allow workflow types to lock certain changes to workflows once things are in use