Merge pull request #329 from davidastephens/origin/REL_040

REL: Release 0.4.0

Author: davidastephens

pandas_datareader/__init__.py

@@ -1,4 +1,4 @@
-__version__ = version = '0.3.0.post'
+__version__ = version = '0.4.0'
 
 from .data import (get_components_yahoo, get_data_famafrench, get_data_google, get_data_yahoo, get_data_enigma,  # noqa
         get_data_yahoo_actions, get_quote_google, get_quote_yahoo, DataReader, Options)  # noqa