Really minor thing, but I for instance like how in Hyper.rs types are used to enforce (at compile time) that one does not try to write headers after having star

Really minor thing, but I for instance like how in Hyper.rs types are used to enforce (at compile time) that one does not try to write headers after having started or sent the body of a response. http://hyper.rs/hyper/v0.10.0/hyper/server/index.html#an-aside-write-status http://hyper.rs/hyper/v0.10.0/hyper/server/index.html#an-asi... Good sign that we are starting to leverage the compiler to verify such invariants.