Make Values an instance of Functor

Author: lpsmith

src/Database/PostgreSQL/Simple/Types.hs

@@ -269,4 +269,4 @@ newtype Savepoint = Savepoint Query
 --   See <http://www.postgresql.org/docs/9.3/static/sql-values.html> for
 --   more information.
 data Values a = Values [QualifiedIdentifier] [a]
-    deriving (Eq, Ord, Show, Read, Typeable)
+    deriving (Eq, Ord, Show, Read, Typeable, Functor)