Bump version to 0.4.1

pep257.py

@@ -50,7 +50,7 @@ except NameError:  # Python 2.5 and earlier
                 return default
-__version__ = '0.4.1-alpha'
+__version__ = '0.4.1'
 __all__ = ('check', 'collect')
 PROJECT_CONFIG = ('setup.cfg', 'tox.ini', '.pep257')