What’s new Profiler Validator information in the Symfony profiler Symfony user impersonation in debug toolbar Validation Constraints ExpressionLanguage Constraint Groups support for Valid constraint Annotations Prefix all controller route names Subscribers Subscribing to events in the micro kernel Components Stopwatch reset() method Microseconds support Command Lazy Commands Translation XLIFF 2.0 Guard getCredentials() responsibilities split Sessions Lazy Sessions Commands debug autowiring debug form Autowiring Local Service Binding