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cat_plot
* If the number of unique values in each features in the data is more than 6, it no longer draws ``Pie chart``.
Instead ``stripplot`` is drawn. In this way, the crowded appearance on the pie chart has been eliminated.
* Now this function draws ``barchart`` if the target features are categorical, ``countplot`` if they are numeric.
* Added in barplot barlabel show bar size.
* Added grid.
pairplot
* Removed y_axis title on Boxplot. It already says features name on the chart.