Fixed a bug where withscores was passed incorrectly on ascending calls.

zrange(self, name, start, end, desc=False, withscores=False, score_cast_func=float)
zrevrange(self, name, start, end, withscores=False, score_cast_func=float)

our calls:
if self.order == self.DESC:
            return connection.zrevrange(*args, **kwargs)
else:
            return connection.zrange(*args, **kwargs)

Where all arguments are passed as ags:
self._range_method(self._get(**options), self.leaderboard_name, int(starting_offset), int(ending_offset), with_scores)

Meaning with_scores is passed as desc, not withscores, on zrange.