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

Issue #3209618 by catch, longwave, Neslee Canil Pinto, daffie, andypost, Gábor Hojtsy: [Symfony 6] Symfony\Component\HttpKernel\Event\KernelEvent::isMasterRequest() is deprecated, use isMainRequest() instead

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

Issue #3113876 by Hardik_Patel_12, himmatbhatia, jungle, klausi, longwave: The "Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent::getException()" method is deprecated since Symfony 4.4, use "getThrowable()" instead

Issue #2986079 by benoit.borrel, alexpott, tim.plunkett, msankhala: Use KernelEvent's isMasterRequest() method instead of HttpKernelInterface's constant

Issue #2901730 by mfernea, ankitjain28may, idebr: Fix 'Squiz.WhiteSpace.FunctionSpacing' coding standard

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

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