Refactor to contain a FeatureGroup rather than sort of being one. Fixes all the _noHas hacks. Now we require leaflet 0.5 however.
Update readme for leaflet 0.5
Update build
Update all examples to leaflet 0.5.1
Support adding random things to the MarkerClusterGroup. Don't try to to cluster them. Refs #195
Example that adds random things to the MCG. Currently we don't support removing them (TODO!)
Fix places we were looping over this._layers to use this._featureGroup.eachLayer instead. Fixes child markers not being added to the map.
Update build