Open multiple clusters

[martinraie]

Hi

Thanks for the great library. I'd like to propose one small feature which would make it even better :)

Currently when using SelectCluster and clicking one cluster open then previously opened cluster is closed. It would be nice if there would be a mode where all previous clusters remained also open so I could see several open clusters at the same time. Cluster is closed when I click on the open cluster again. Basically each cluster would work like a toggle button - first click opens, second closes. Clicking on any other cluster doesn't close it.

I'd imagine there could be a new option (e.g. autoClose:boolean) which would default to true (then it works like today). When setting it false it would work as I described above.

What do you think, would this feature be worth considering?

[martinraie]

Thank you.