The most exciting part of this for me is the automation and integration with Apple's tools. For instance, built-in TestFlight rake task, or build and run on de

The most exciting part of this for me is the automation and integration with Apple's tools. For instance, built-in TestFlight rake task, or build and run on device/simulator. I'd love to borrow some of that for a CI build system (which for me is currently a large shell script that could be improved on). I'm also very interested by the interactive REPL that can run code inside my application. LLDB is good, but falls short for me occasionally.