Reloades the configuration

        This method will reload the configuration instance using the last
        known filename.  Note this method will initially clear the
        configuration and reload all entries.

def reload(self):
        """Reloades the configuration

        This method will reload the configuration instance using the last
        known filename.  Note this method will initially clear the
        configuration and reload all entries.

        """
        for section in self.sections():
            self.remove_section(section)
        self.autoload()