How to take advantage of Koa's control flow benefits?
I'm coming from Express and love what you guys are doing here. The response-time middleware is an awesome example of how to leverage koa's downstream/upstream flow. However, I haven't been able to find any other good examples like that. As a result, it's been a bit hard for me to figure out how to "think in koa" and figure out how to leverage this in a real app.

Does anyone have any good resources or examples of real apps to help transform my linear-express thinking into koa-thinking?
