Issue #3491275 by nicxvan, dww, catch, mstrelan, berdir, larowlan: Mark core modules as converted to OOP hooks

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

Issue #3483065 by nicxvan, mstrelan: Add void return type to all hook_form_alter, hook_form_FORM_ID_alter and hook_form_BASE_FORM_ID_alter implementations

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

Issue #3395623 by marvil07, Wim Leers, borisson_, smustgrave: Add validation constraints to automated_cron.settings

Issue #3386458 by catch, quietone, alexpott, larowlan: Add GenericModuleTestBase and use it to test general module things

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

Issue #3094398 by martin107, alexpott, andypost, klausi: Update Symfony response and request events to new classes

Issue #3072702 by alexpott, Wim Leers, mikelutz, xjm, catch, Berdir, tedbow, webchick, shaal, Mixologic, heddn: Core extensions should not need to specify the new core_version_requirement in *.info.yml files so that 9.0.x can be installed

Issue #2731817 by mikelutz, ashishdalvi, Sonal.Sangale, dbt102, andypost, jhodgdon, martin107, roderik: Replace all calls to the deprecated Drupal::url() function in Core

Issue #2572777 by andypost, alexpott, attiks, andriyun: Fix 'Squiz.Strings.ConcatenationSpacing' coding standard

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

Issue #2507031 by claudiu.cristea, dawehner, Wim Leers, mitrpaka, webflo, catch, piyuesh23, beejeebus, Berdir: Optimize automatic cron subscriber by moving automatic cron to a module

Revert "Issue #2507031 by claudiu.cristea, dawehner, Wim Leers, mitrpaka, webflo, catch, piyuesh23, beejeebus: Optimize automatic cron subscriber by moving automatic cron to a module"

This reverts commit 6e0ce080.

Issue #2507031 by claudiu.cristea, dawehner, Wim Leers, mitrpaka, webflo, catch, piyuesh23, beejeebus: Optimize automatic cron subscriber by moving automatic cron to a module