Add dependency of shapely (jupyter-widgets#683)

* Add dependency of shapely separately as geopandas is not dependency

Signed-off-by: Kharude, Sachin <[email protected]>

* removed latest version pin from shapely

Signed-off-by: Kharude, Sachin <[email protected]>

Author: sackh

setup.py

@@ -141,6 +141,7 @@ def run(self):
         'ipywidgets>=7.5.0,<8',
         'traittypes>=0.2.1,<3',
         'branca>=0.3.1,<0.5',
+        'shapely',
     ],
     packages=find_packages(),
     zip_safe=False,