Roşca-Plonka projection?

[Fil]

See https://beta.observablehq.com/@fil/an-equal-area-projection-for-the-cubic-earth

Is there any interest in integrating this equal-area square face projection? (It can be fun to use on something else than the 1/6th square face of the cube.) If so, should it be integrated in this module or in d3-geo-projection?

[Fil]

It's a lot of packaging work for something that is mostly experimental (and didactic, to show how area preservation distorts angles). My intent is to document it, but not have it as a maintained projection.