Add DualMap support

[a-slice-of-py]

Streamlit-folium component now supports also DualMap from Folium plugins.

• Add switch in streamlit-folium __init__.py to properly handle DualMap rendering

• Update app example adding DualMap

[randyzwitch]

Thanks for submitting this! The tests fail because the app changed, which is expected. I'll review this locally, clean up the test suite and then merge it in if everything looks good

[a-slice-of-py]

Thanks for submitting this! The tests fail because the app changed, which is expected. I'll review this locally, clean up the test suite and then merge it in if everything looks good

Yep, sorry but I forgot to check tests and align them accordingly.

I was looking for an elegant way to switch between map types in the example, so I went for modifying existing one. Probably, the new feature should have been shown in a separate file to prevent tests fail.

[randyzwitch]

It's no problem at all, the same file is great :)

[randyzwitch]

Works locally, going to merge this, then fix the tests in a different commit

[a-slice-of-py]

I checked app on Streamlit sharing and unfortunately dual map page results broken with AttributeError: module 'folium' has no attribute 'plugins' - despite also in my local env everything was fine.

Not sure, but maybe we can fix it with an explicit from folium import plugins and change accordingly line 25 in streamlit_app.py.

[randyzwitch]

Thanks strange, thanks for surfacing. I'll fix this today