sklearn-compatibility of function name and instance

[jckkvs]

Thank you for providing a useful library.

I think that compatibility with scikit-learn is high as one way to improve the usability of machine learning models.

In particular, I think the following two specifications have low compatibility.

Fit is designed as a class, not a function. A specification that requires X and y when creating an instance in "class Muggeo".

It's just my opinion.