- Added FSMUnimplementedInput exception. It's raised by default if the read_symbol() method is not implemented.
 - All relevant methods now have their docstrings.
 - Removed the state property from the SimpleFSM class.
 - All exceptions now inherit from FSMError exception.
 - Removed all empty spaces before colon.
 - Added the pre_transit() and post_transit() methods to the SimpleFSM class.
 - Removed all empty spaces before colon.
 - Reformatted some docstrings.
 - Added README.rst.