Re: [fetch] Access to the HTTP trailer (#34)

I think streaming should not be too affected. It makes sense to fulfill the trailers promise as soon as they are available---which might be never if the stream consumer exerts backpressure and stops the flow, or might be before the stream consumer fully reads all chunks if the stream is doing internal buffering. And assuming they are used for similar metadata to headers I don't see a need to stream the trailers; we can use the same model as headers and get them all at once.

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