• Use ActivationStrategy instead of actionLevel when available
• Register resettable processors (ResettableInterface) for autoconfiguration (tag: kernel.reset)
• Drop support for Symfony 3.4
• Drop support for PHP < 7.1
• Fix call to undefined method pushProcessor on handler that does not implement ProcessableHandlerInterface
• Use "use_locking" option with rotating file handler
• Add ability to specify custom Sentry hub service