[RFC] "http-types" breakage / additions / rework

I agree with those who say you should break the API and bump the bounds. Many who don’t set upper bounds do it in full knowledge that major bumps can happen and they’re willing to take the risk. I would suggest that whatever new API you decide on you implement as much of it as possible in the old major version, so that users of the package have a forward-compatible mitigation. That way they can write code that is compatible with both major versions and avoid propagating breakage up the dependency tree.