Jenks

[pmains]

This feature change adds Jenks Natural Breaks Optimization to choropleths created using Folium.
https://en.wikipedia.org/wiki/Jenks_natural_breaks_optimization

[ocefpaf]

I would prefer a PR that makes passing the pre-computed bins so users could use whatever they want. However, that may be too complex and would break a lot of code.

With that said, this PR is fine and it makes sense. My only request is to move the import inside the if-clause and add or add try/except clause for it at the top so we cab make it optional. I don't want to increase the number of dependencies in folium.

[pmains]

Of course.

To be clear, you want to put the import inside of the if-clause or add a try/except clause, not both, right?

[Conengmo]

I like it! Have some comments, could you take a look?

[Conengmo]

Could you also include the notebook output in a commit? That way it will show up here: https://nbviewer.org/github/pmains/folium/blob/jenks/examples/Jenks.ipynb

https://nbviewer.org/github/pmains/folium/blob/jenks/examples/Choropleth%20with%20Jenks%20natural%20breaks%20optimization.ipynb

[Conengmo]

Thank you @pmains! Nice addition.