Revert version bump, update changelog

servant/CHANGELOG.md

@@ -2,7 +2,7 @@ next
 ----
 
 * Add `CaptureAll` combinator. Captures all of the remaining segments in a URL.
-* replace use of `ToByteString` with `HttpApiData` for `GetHeaders`
+* BACKWARDS INCOMPATIBLE replace use of `ToFromByteString` with `To/FromHttpApiData` for `GetHeaders/BuildHeadersTo`
 
 0.8
 ---

servant/servant.cabal

@@ -1,5 +1,5 @@
 name:                servant
-version:             0.8.1
+version:             0.8
 synopsis:            A family of combinators for defining webservices APIs
 description:
   A family of combinators for defining webservices APIs and serving them

servant/src/Servant/API/ResponseHeaders.hs

@@ -31,8 +31,8 @@ module Servant.API.ResponseHeaders
     ) where
 
 import           Data.ByteString.Char8       as BS (pack, unlines, init)
-import           Web.HttpApiData             (ToHttpApiData,toHeader
-                                             ,FromHttpApiData,parseHeader)
+import           Web.HttpApiData             (ToHttpApiData, toHeader
+                                             ,FromHttpApiData, parseHeader)
 import qualified Data.CaseInsensitive        as CI
 import           Data.Proxy
 import           GHC.TypeLits                (KnownSymbol, symbolVal)