Generalize Pipes.Parse.concat output type
Generalize Pipes.Parse.intercalate output type
Generalize Pipes.Parse.groupBy output type
Generalize Pipes.Parse.chunksOf output type
Generalize Pipes.Parse.splitOn output type
Specialize Pipes.Prelude.takeFree

Since we discard the return value of the `FreeT f m r` argument, it
makes sense to specialize it to be `()`.
Merge pull request #16 from k0001/generalize-outputs

Generalize outputs