Use numpy to build faster histogram plots

[inisis]

Thanks for your wonderful project. When I use hist plot, it's very slow when data is large, we can use numpy to accelarate plot.

[piccolomo]

Hi @inisis, sorry for being so late!

it is a good idea, but I am trying have plotext have 0 dependencies in its basic form.

Is there any way that the function hist_data() could be made faster without numpy's help? Perhaps with a Counter object?

Thank you,
Savino