#bins recommendation for large dataset...

Hello, 

Firstly thanks a lot for your package.

I think it is just the only one that allows to calulate `drift concept` between two dataset.
I plan to use it for a large dataset (some millions rows) and I would like to know which is your recommendation for the `# bins`  parameter in either  `calculate_covariate_drift()` or `calculate_distance()` functions.

Thanks in anticipation,
Carlos