Add cluster support (custom types)

[calvinmetcalf]

ok @knownasilya try this with a type: 'markerCluster' in the options object

[knownasilya]

This goes at the same level as the range option?

[calvinmetcalf]

no in the options object not in the style object

[knownasilya]

Actually line 150 uses the style as a backup for type.

[knownasilya]

Only issue left, is that click doesn't work for the cluster layers. The contraflow layer click handler is firing instead, even though it has a lower zindex..

[calvinmetcalf]

this is js code not json

[knownasilya]

fixed

[calvinmetcalf]

is there a branch of something that has this ?

[knownasilya]

The contraflow alpha uses this, and you can see the clicking issue there.

[calvinmetcalf]

ah so cluster layers don't actually support hovering, which is what we use to handle clicks, so we probably just want to handle both the entrance and exit clicks in the contraflow handler, e.g. do getInfo calls on them both

[knownasilya]

We can probably not merge this PR, since we aren't using clusters yet, and MapLarge hasn't finished them yet.