I'm still a bit hesitant to pick up tokio and tokio-hyper so soon. We've got a lot of production miles on the current async client - on the order of billions of

I'm still a bit hesitant to pick up tokio and tokio-hyper so soon. We've got a lot of production miles on the current async client - on the order of billions of HTTP requests. Qualifying the new hyper code for production use will take some time. There's also still some discussion on the tokio issue tracker about problems with panicking; we'll probably wait until that category of issue is resolved before diving in.