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

My general perspective is that Haskell has become as good as it has because people thoughtfully push through the work to make things right (e.g., Semigroup => Monoid rework, Functor => Applicative => Monad rework). As Amazonka maintainer I am absolutely happy to help get upper bounds in place to prevent breakage before you do a new release. amazonka-*-2.1 is taking much longer than I’d like because of a house move and other things, but I can make sure it (and older versions) are released/revised with correct upper bounds, and CPP in support for a breaking http-types-1.0.0.0 if it comes to that.