Fly - Now With Power Pause

The latest feature of Fly is now available - the ability to pause applications, which saves their state and reduces running instances to zero while maintaining networking configuration, IP addresses, and certificates. This can be useful for mothballing projects or managing costs. When ready to resume, flyctl resume brings back one instance at a time, allowing users to scale up as needed with the flyctl scale set min=n command. The regions command has also been enhanced with a set command for easier region pool management. Additionally, flyctl now displays an application's current status and includes a new open command that opens the user's web browser to the application's hostname after deployment.