Update setup.py

Author: Randy Zwitch

setup.py

@@ -2,7 +2,7 @@
 
 setuptools.setup(
     name="streamlit_folium",
-    version="0.3.0",
+    version="0.4.0",
     author="Randy Zwitch",
     author_email="[email protected]",
     description="Render Folium objects in Streamlit",