Moved folium and geojson to optional dependencies. Revised 'extras_require'...

Moved folium and geojson to optional dependencies. Revised 'extras_require' key parameter in setup.py.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>
3 jobs for enhancement/optional_deps in 2 minutes and 8 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #57320
test_geoarray

00:01:01

76.0%
passed #57321
test_styles

00:00:24

passed #57322
test_urls

00:00:42