Add (better) support for feature layers #15
Description
I was able to tap into the olhelper to set group colors, and use that to give features from different layers a unique color, but it would be nicer if that would be made easier.
Next to that, passing in features in some structure that splits out per layer would be convenient, so you don't have to flatten the layer features into a aggregate array.
As bonus, built-in checkboxes for layers and such would be great, and best of all if the component could potentially make the back-end calls and all, based on an updatable filter or where property (in case of search constraints)..