Returns the events from the calendar for the next days_to_look_ahead days.

def get_upcoming_events(self, days_to_look_ahead):
        '''Returns the events from the calendar for the next days_to_look_ahead days.'''
        now = datetime.now(tz=self.timezone) # timezone?
        start_time = datetime(year=now.year, month=now.month, day=now.day, hour=now.hour, minute=now.minute, second=now.second, tzinfo=self.timezone)
        end_time = start_time + timedelta(days = days_to_look_ahead)
        start_time = start_time.isoformat()
        end_time = end_time.isoformat()
        return self.get_events(start_time, end_time)