Add a Power Transform preprocessor to Shogun.

[Hephaestus12]

Like the PowerTransformer in Scikit-learn or boxcox and yeojohnson in scipy.stats.

[karlnapf]

This shouldn't be too hard to add right?
You could have a go at this... (but let's first finish the poisson regression of course)

[Hephaestus12]

Yes, I plan to start working on this after getting done with GLM. :)

[imsiddhant07]

@karlnapf may I take this up?

[gf712]

@siddhantjain07 Go for it :)

[imsiddhant07]

Yes thanks, @gf712!
Could you please tell me, whether it should be

1. A class with methods
2. or a function within some preprocessing code.
   and should the file be .cpp or a .hpp
   Sorry if the doubts seem silly, but this my first time fixing some issue at something this big. Kindly bear with me :D

[gf712]

This should be a class. No problem, have a look at other classes that inherit from Transform in https://github.com/shogun-toolbox/shogun/tree/develop/src/shogun/preprocessor, it should help get you started :)