yampa: Add haddock indicators to export list (KSG Haskell 1.3.0 - 3.4…

…). Refs #266.

The module declaration should use haddock indicators to group the
elements exported so as to facilitate navigating the documentation.

yampa/src/FRP/Yampa/Task.hs

@@ -14,14 +14,20 @@
 --
 -- Task abstraction on top of signal transformers.
 module FRP.Yampa.Task
-    ( Task
+    (
+      -- * The Task type
+      Task
     , mkTask
     , runTask
     , runTask_
     , taskToSF
+
+      -- * Basic tasks
     , constT
     , sleepT
     , snapT
+
+    -- * Basic tasks combinators
     , timeOut
     , abortWhen
     )