Rewrite clusterHide/clusterShow to not even change options.opacity. Refs #890
Rewrite clusterHide/clusterShow to not even change options.opacity. Refs #890

Leaflet/Leaflet.markercluster,ghybs/Leaflet.markercluster,Leaflet/Leaflet.markercluster,ghybs/Leaflet.markercluster