def hash(self):
        """
        Return a value that's used to uniquely identify an entry in a date so we can regroup all entries that share the
        same hash.
        """
        return u''.join([
            self.alias,
            self.description,
            str(self.ignored),
            str(self.flags),
        ])
Return a value that's used to uniquely identify an entry in a date so we can regroup all entries that share the
        same hash.