Fix some types in cluster
Fix some types in cluster

alex3165/react-mapbox-gl,lamuertepeluda/react-mapbox-gl,alex3165/react-mapbox-gl,alex3165/react-mapbox-gl,lamuertepeluda/react-mapbox-gl,alex3165/react-mapbox-gl,lamuertepeluda/react-mapbox-gl,lamuertepeluda/react-mapbox-gl