v2.9.0

• Added support for pubsub across the Cluster. Use the publish() method and listen to the message event on a limiter.
• Removed the need to wait for the ready() promise to complete before issuing commands. The commands will be queued until the limiter successfully connects. Make sure to listen to the error event to handle connection errors.
• Added the jobs() method to return a list of job ids in a specific state.
• Fixed an edge case with certain methods (like check()) when a Group key is recreated after timing out.