Update changelog

Author: domdfcoding

doc-source/changelog.rst

@@ -3,6 +3,31 @@ Changelog
 ===============
 
 
+0.4.0
+-------
+
+Cap ``cssutils`` requirement to ``2.11.0``
+
+
+0.3.0
+-------
+
+Support either ``css_parser`` or ``cssutils`` for serialisation/deserialisation.
+
+
+0.2.4
+-------
+
+Documentation and test improvements
+
+
+0.2.3
+-------
+
+* Documentation fixes
+* Remove empty ``all`` extra.
+
+
 0.2.2
 -------