* [geo] introduce "Auto Zoom" control
On geospatial visualization, checking the "Auto Zoom" control makes it
such that the viewport is fitted to the data upon rendering the chart.
For dashboards with region filters, the map should jump to the right
position.
Eventually we should enhance this to fly and ease to the position in an
animated way.
* Added TODO notes
Moving from having the user define an interceptor function that operates
on one object at a time.
By passing the entire array, it's possible to do multiple pass where
needed. A common pattern might be to figure out the max value in order
to define a scaler function. That's only possible if dealing with the
whole array.
* Using JS to customize spatial viz and tooltips
* Add missing deck_multi.png
* Improve GeoJSON layer with JS support and extra controls
* Addressing comments
