0.4.0
-----

- 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.

- better error message when loading setuptools entrypoints fails
  due to a VersionConflict.  Thanks Daniel Hahler.

0.3.1
-----

- avoid using deprecated-in-python3.5 getargspec method. Thanks 
  Michael Droettboom.


0.3.0
-----

initial release
