This is a big release. Async/await in stable core is something I've been (literally) waiting 6 years for.
Many people have criticized Node's cooperative multithreading model, with both good and uninformed reasons. Yet, it is without dispute that the model is popular.
Async/await is a giant leap forward toward making Node usable for beginner and expert alike. This release is a celebration.
For those of you with existing applications looking to migrate, try `--turbo --ignition` to emulate (most) of the V8 5.9 pipeline. Anecdotally, microbenchmark-style code regresses slightly, real-world code improves by as much as 2x. Exciting times.