Added placemark clusterer feature. It also supports placemark spiderfying.
In map details there are new fields (if you will compare with Zh GoogleMap)
– Place clustered placemarks on a spiral – it is like in google’s extension, but it is only in cluster feature
– Zoom on cluster click – when you click on cluster – map zoom changed to show markers in cluster
– Show cluster coverage- on hovering cluster you can see its bounds
You can also create clusters belonging different groups. In future it will support icon overriding by group, like in demo