• PhpReflection::expandClassName() added support for @return $this
• ContainerBuilder: unused parameters check when generating factory
• Compiler: support for removing services via 'name: no'
• PhpReflection::parseUseStatemenets(): class in use can contain leading \ #97
• ContainerPanel: ob_start() is protected against flush when error occurs

For the details you can have a look at the diff.