update work in changelog

Author: dakrone

changelog.org

@@ -23,6 +23,8 @@
 ** 2011-10-17
    - restarted an exception branch that uses Slingshot to throw a much
      more useful exception
+   - fixed an issue when malformed server responses could NPE the
+     decompression middleware
 ** Release 0.2.1
 ** 2011-09-23
    - merged https://github.com/dakrone/clj-http/pull/7 to accept both