Symfony 2.8.21 released

Symfony 2.8.21 has just been released. Here is a list of the most important changes:

• bug #22847 [Console] ChoiceQuestion must have choices (@ro0NL)
• bug #22900 [FrameworkBundle][Console] Fix the override of a command registered by the kernel (@aaa2000)
• bug #22910 [Filesystem] improve error handling in lock() (@xabbuh)
• bug #22718 [Console] Fixed different behaviour of key and value user inputs in multiple choice question (@borNfreee)
• bug #22901 Fix missing abstract key in XmlDumper (@weaverryan)
• bug #22817 [PhpUnitBridge] optional error handler arguments (@xabbuh)
• bug #22752 Improved how profiler errors are displayed on small screens (@javiereguiluz)
• bug #22647 [VarDumper] Fix dumping of non-nested stubs (@nicolas-grekas)
• bug #22584 [Security] Avoid unnecessary route lookup for empty logout path (@ro0NL)
• bug #22690 [Console] Fix errors not rethrown even if not handled by console.error listeners (@chalasr)
• bug #22669 [FrameworkBundle] AbstractConfigCommand: do not try registering bundles twice (@ogizanagi)
• bug #22676 [FrameworkBundle] Adding the extension XML (@flug)

Want to upgrade to this new release? Fortunately, because Symfony protects backwards-compatibility very closely, this should be quite easy. Read our upgrade documentation to learn more.

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