ol-ext: OL3 feature animation

ol.featureAnimation provides animations to animate features on an OL3 map. Animation can be chained.
Style with a zIndex of -1 are viewed as shadows and animated on the ground (drop or throw animation).
They are used with animateFeature function on ol.layer.Vector or ol.Map.
The animation is rendered in a postcompose frame.


Click on the map to drop a features / click on a feature to remove it!