add changelogs for recent changes.

Author: hpk42

CHANGELOG

@@ -1,6 +1,11 @@
 0.3.2
 -----
 
+- add has_plugin(name) method to pluginmanager.  thanks Bruno Oliveira.
+
+- fix issue11: make plugin parsing more resilient against exceptions
+  from __getattr__ functions. Thanks Bruno Oliveira.
+
 - fix issue #4: specific HookCallError exception for when a hook call 
   provides not enough arguments.