Feature request: Add layer with polygons, lines, points. KML compatible

[rolandf]

It woudl be nice to be able to add data to the map. Like loading a KML in Google Earth.

[podusowski]

Hi! It does sound nice, but I'm sure if I'm able to commit to that. Walkers has an API for drawing stuff on the map, so maybe such functionality is a good candidate for an external crate.