Issue #3209723 by murilohp, daffie, longwave, andypost: [Symfony 6] Symfony\Component\HttpKernel\HttpKernelInterface::MASTER_REQUEST is deprecated, use ::MAIN_REQUEST instead

Issue #3232082 by daffie, longwave, catch: [Symfony 6] Add "Response" type hint to methods that implement the method Symfony\Component\HttpKernel\HttpKernelInterface::handle()

Issue #2725435 by guilhermevp, naveenvalecha, andypost, bradjones1: Remove outdated @todo pointing to #2364011

Issue #2854543 by Wim Leers, polynya, dawehner, mpdonadio, gabesullice, larowlan, klausi: NegotiationMiddleware calls $request->setRequestFormat('html') when there is no _format request parameter, but shouldn't

Issue #2572307 by vprocessor, attiks, andriyun, alexpott, pfrenssen: Fix 'Generic.PHP.UpperCaseConstant' coding standard

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

Issue #2506533 by Jaesin, minnur, neclimdul, sdstyles, dawehner, Crell: Remove ContentNegotiation and embed functionality in the middleware

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2481453 by dawehner, pwolanin, rteijeiro, neclimdul, znerol: Implement query parameter based content negotiation as alternative to extensions