Implementing geom_hex

Hello, I have really enjoyed using plotnine over the past couple months, great project! I would love to be able to contribute myself, one of the things I liked from R's ggplot was geom_hex: https://www.rdocumentation.org/packages/ggplot2/versions/3.2.0/topics/geom_hex. It was a great way to visualize large amounts of data that would otherwise be a confusing mess of millions of indistinguishible dots. I would love to see in plotnine. Right now, I'm still thinking about how I would go about implementing it, but it would be built on top of matplotlib's hexbin, and would act as closely as possible to the original geom_hex of ggplot2. Is this something plotnine authors/owners/maintainers would be interested in and desire to be a part of the project? Any input on what would be expected of this new geom?

Thanks

Start by reviewing plotnine's existing geom implementations and tests, then compare the requested behavior with ggplot2's geom_hex documentation and matplotlib's hexbin. Done means providing a geom_hex for plotnine whose behavior matches the requested ggplot2 semantics and is covered by tests.