HsSyck-0.4: Changes

[Changes for 0.04 - 2007-06-16]

* Add Haddock documentations; no functional changes.
  Contributed by: Jaap Weel

[Changes for 0.03 - 2007-05-21]

* First working Hackage release: Unbreak the build by adding
  missing extra-source-files.
  Requested by: Bryan O'Sullivan