Add Map.fit_bounds(bounds)

[davidbrochart]

It is not implemented using Leaflet's fitBounds method (see issues below), but by iteratively changing the zoom level and checking the bounds (which is the maximum bounds of all map views).

Fixes #96
Fixes #529

[astrojuanlu]

Perhaps something like this could be used to avoid the zoom iteration?

https://github.com/satellogic/telluric/blob/72b0d2dd9e5efe65ba11845fc39c94e83d8394a0/telluric/plotting.py#L56-L79

[davidbrochart]

I was thinking about that too, but mercantile is spherical mercator only, and ipyleaflet also supports custom projections.

[astrojuanlu]

I was thinking about that too, but mercantile is spherical mercator only

Fair enough! It's great to see this feature anyway

and ipyleaflet also supports custom projections.

Oh wow, I didn't know that! Reading now some examples in #612 (couldn't find anything in the docs), amazing!

[davidbrochart]

Thanks!
Yeah the docs are always lacking. We mention custom projections in the crs attribute of the map, but it's really hidden 😄
Otherwise there is this notebook: https://github.com/jupyter-widgets/ipyleaflet/blob/master/examples/CustomProjections.ipynb