diff --git a/Changes b/Changes
new file mode 100644
--- /dev/null
+++ b/Changes
@@ -0,0 +1,10 @@
+[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
diff --git a/Data/Yaml/Syck.hsc b/Data/Yaml/Syck.hsc
--- a/Data/Yaml/Syck.hsc
+++ b/Data/Yaml/Syck.hsc
@@ -1,3 +1,15 @@
+-- |
+-- Module       : Data.Yaml.Syck
+-- Copyright    : Copyright 2005, 2006, 2007 by Audrey Tang, Gaal Yahas
+-- License      : MIT 
+-- Maintainer   : Audrey Tang <audreyt@audreyt.org>
+-- Stability    : provisional
+-- Portability  : ghc
+--
+-- This is an interface to the @syck@ C library for parsing and
+-- dumping YAML data. It lets you transform textual YAML data into an
+-- object of type 'YamlNode', and vice versa, fast.
+
 #include "syck.h"
 
 module Data.Yaml.Syck (
@@ -76,10 +88,15 @@
 nilNode :: YamlNode
 nilNode = MkNode maxId ENil Nothing ASingleton
 
+
+-- | Convert a ByteString buffer into a regular Haskell string
+
 {-# INLINE unpackBuf #-}
 unpackBuf :: Buf -> String
 unpackBuf = Buf.unpack
 
+-- | Convert a regular Haskell string into a ByteString buffer
+
 {-# INLINE packBuf #-}
 packBuf :: String -> Buf
 packBuf = Buf.pack
@@ -107,15 +124,21 @@
 type EmitterExtras = Ptr ()
 -}
 
+-- | Dump a YAML node into a ByteString buffer (fast)
+
 emitYamlBytes :: YamlNode -> IO Buf
 emitYamlBytes node = do
     bracket syck_new_emitter syck_free_emitter $ \emitter -> do
         -- set up output port
         out    <- newIORef []
+
         #{poke SyckEmitter, style} emitter scalarFold
-        -- #{poke SyckEmitter, sort_keys} emitter (1 :: CInt)
         #{poke SyckEmitter, anchor_format} emitter (Ptr "%d"## :: CString)
 
+        -- Uncomment this line if you want EMap to sort its keys.
+        -- (this is usually unnecessary because Data.Map is already sorted.)
+        -- #{poke SyckEmitter, sort_keys} emitter (1 :: CInt)
+
         marks <- Hash.new (==) (Hash.hashInt)
 
         let freeze = freezeNode marks
@@ -130,11 +153,15 @@
         syck_emitter_flush emitter 0
         fmap (Buf.concat . reverse) (readIORef out)
 
+-- | Given a file name, dump a YAML node into that file
+
 emitYamlFile :: FilePath -> YamlNode -> IO ()
 emitYamlFile file node = do
     buf <- emitYamlBytes node
     Buf.writeFile file buf
 
+-- | Dump a YAML node into a regular Haskell string
+
 emitYaml :: YamlNode -> IO String
 emitYaml node = fmap unpackBuf (emitYamlBytes node)
 
@@ -204,11 +231,17 @@
 withTag :: YamlNode -> CString -> (CString -> IO a) -> IO a
 withTag node def f = maybe (f def) (`useAsCString` f) (n_tag node)
 
+-- | Parse a regular Haskell string
+
 parseYaml :: String -> IO YamlNode
 parseYaml = (`withCString` parseYamlCStr)
 
+-- | Given a file name, parse contents of file
+
 parseYamlFile :: String -> IO YamlNode
 parseYamlFile file = parseYamlBytes =<< Buf.readFile file
+
+-- | Parse a ByteString buffer (this is faster)
 
 parseYamlBytes :: Buf -> IO YamlNode
 parseYamlBytes = (`useAsCString` parseYamlCStr)
diff --git a/HsSyck.cabal b/HsSyck.cabal
--- a/HsSyck.cabal
+++ b/HsSyck.cabal
@@ -1,10 +1,15 @@
 Name:                HsSyck
-Version:             0.3
+Version:             0.4
 Category:            Data
 Synopsis:            Fast, lightweight YAML loader and dumper
 Description:         Fast, lightweight YAML loader and dumper
--- License is really "MIT", but Cabal allows no such field
-License:             BSD3
+        .
+        This is an interface to the @syck@ C library for parsing and
+        dumping YAML data. It lets you transform textual YAML data into an
+        object of type 'YamlNode', and vice versa, fast.
+Copyright:           Audrey Tang, Gaal Yahas, 2005, 2006, 2007
+License:             OtherLicense
+-- MIT License, see ./LICENSE
 License-file:        LICENSE
 Author:              Audrey Tang
 Maintainer:          audreyt@audreyt.org
@@ -15,5 +20,5 @@
 c-sources:           syck/bytecode.c syck/emitter.c syck/gram.c syck/handler.c
                      syck/implicit.c syck/node.c syck/syck.c syck/syck_st.c syck/token.c
                      syck/yaml2byte.c 
-extra-source-files:  syck/syck.h syck/syck_st.h syck/gram.h syck/yamlbyte.h
+extra-source-files:  Changes syck/syck.h syck/syck_st.h syck/gram.h syck/yamlbyte.h
 include-dirs:        syck