ENH: add dataframe render trimming in `Styler` to avoid browser crash

[attack68]

DataFrame.to_html has max rows and max cols to automatically trim the console or string output.

DataFrame.styler.render does not and with large DataFrames this can potentially crash the browser of a Jupyter Notebook, or maybe a console.

Personally, I use Styler occasionally to quickly avoid the reasonably small max values in the former and this I would want to keep, but some tolerable, larger limit should be imposed in my opinion.

[LarWong]

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