Problem in percentile init

[Colleoni]

Hi,
thanks for this awesome library.
I have encountered a problem while creating a percentile object.

super().__init__(expression, percentiles=percentiles, **extra) TypeError: super() takes at least 1 argument (0 given)

It can be fixed simply writing:

super(Percentile, self).__init__(expression, percentiles=percentiles, **extra)

Thanks again,

Luca

[martinduparc]

Hi @Colleoni

Feel free to submit a PR with your changes.

Thanks!

[Seha16]

@martinduparc I guess it's already fixed.