Save post location name and Google Maps link.

def save_location(self, filename: str, location: PostLocation, mtime: datetime) -> None:
        """Save post location name and Google Maps link."""
        filename += '_location.txt'
        location_string = (location.name + "\n" +
                           "https://maps.google.com/maps?q={0},{1}&ll={0},{1}\n".format(location.lat,
                                                                                        location.lng))
        with open(filename, 'wb') as text_file:
            shutil.copyfileobj(BytesIO(location_string.encode()), text_file)
        os.utime(filename, (datetime.now().timestamp(), mtime.timestamp()))
        self.context.log('geo', end=' ', flush=True)