Add anchorXUnits and anchorYUnits options to ol.style.Icon
Use anchorXUnits and anchorYUnits in icon example
Support anchorXUnits and anchorYUnits in KML format
Change default anchor for KML icons from Google Maps
Add typecast to icon example
Icon anchors are Array.<number>
Merge pull request #1483 from elemoine/vector-api-anchor-units

[vector-api] Support different anchor units in ol.style.Icon
Remove useless code
Scale the image size and anchor by pixelRatio