Add route decorator

[jgeerds]

This adds a flask like route decorator:

app = web.Application()

@app.route('/')
def hello_world(request):
    return web.Response(request, b"Hello, world")

[fafhrd91]

there are couple issues here:

• this adds huge problem name "configuration as side effect of importing"
• route matching is order specific, it is very hard to maintain import order

-1

[asvetlov]

-1, I share @fafhrd91 objections.

[ludovic-gasc]

-1, I've tried to implement that in API-Hour, I had more issues than solutions.

[jgeerds]

I didn't considered these issues. You're right, it's not the best idea :)

[lock]

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