Contribute GeoJSON globe example

[deeplook]

I've built a small example for rendering GeoJSON on a globe that I would be happy to contribute to the ipyvolume example gallery, if anybody is interested, maybe in exchange of getting some feedback to other tickets. ;) See attached clip.

[GenevieveBuckley]

That's really neat!

[deeplook]

I've expanded this a little in this notebook, still work in progress...: https://github.com/deeplook/spheromones

[maartenbreddels]

Really nice work, I'm a bit busy on other projects right now, but this is absolutely not forgotten. A while ago I saw a geopandas talk, and I instantly though I should do what you did here. This is also asking for some kind of polygon hover event, to get feedback above which region you are hovering.

[deeplook]

Any chance to move forward? Also, I see many other open tickets and the code base increasingly appears to be in a "frozen" state which would be really a pity...

[deeplook]

More discussion is happening here: #302

[deeplook]

@maartenbreddels Do you want to add a core sphere object prior to accepting the PR mentioned above?