0 response with a ByteString for convenience when using OverloadedStrings
okay' ∷ B.ByteString -- ^ Response body
      → Route Response
okay' = return ∘ Response 200
{-# INLINE okay' #-}

-- 
okay' ∷ B.ByteString -- ^ Response body
      → Route Response
okay' = return ∘ Response 200
okay' = return ∘ Response 200