Route value object without magic

[snapshotpl]

No description provided.

[weierophinney]

If we go the way of #134, we may not even need a Route instance at all!

Essentially, we'd only be composing middleware instances in the MiddlewarePipe, as path-based middleware would be handled by a special decorator.

Let's see how #134 shakes out, and then decide whether or not to proceed on this one.

[weierophinney]

Closing, as #134 removes the class entirely, and will be merged soon.