allow branca ColorMap in write_png #126
Merged
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Fixes python-visualization/folium#1571 and python-visualization/folium#1280, when we also merge python-visualization/folium#1708.
Users expect to be able to pass a branca
ColorMap
towrite_png
andimage_to_url
. Make this possible by testing for the correct type and using thergba_floats_tuple
methods if it's a brancaColorMap
. Add tests.Also include changes from folium to the same function so we can remove the duplicate code from folium.