Description
Perhaps I missed it, but I could not find any way to create an ipyleaflet Map that uses the built-in leaflet CRS's. In particular I'm interested in the "simple" one (E.g., https://leafletjs.com/examples/crs-simple/crs-simple.html). The idea here is that applying leaflet to more generic datasets than geo maps (my specific interest is a variety of astronomy applications) is a lot easier with the Simple CRS.
Depending on the answer, this issue could be either "feature request", "where would I look to access the JS code that initializes map so that I can make a PR", or "the explanation of how should be in the docs".
Note this is a bit distinct from #70 mainly because that's a much more general thing. This is about the built-in leaflet CRS's (especially simple)