Add violin plots

[stardust3dd]

Is it possible to add violin plots to the plot function? Since KDE plots & box plots are already provided, it would be immensely beneficial to have them together

[dovahcrow]

@stardust3dd Thanks for your suggestion. May I ask what's the additional value you can get from the violin plot besides KDE & box plot? Or is it an aesthetic complement to the existing plots?

[stardust3dd]

Was not really thinking of the aesthetic aspect of it, but that can be a plus I guess. The violin plots may come in handy while comparing multiple feature distributions separately within dataprep itself. Right now, to do so requires us to switch between the box plots & KDE plots of the multiple features again & again, which is slightly inconvenient for actual comparison when it is not possible to see the whole picture for a feature at a glance.