add rotate to geometry (since OpenLayers 3.15.0).
add rotate to geometry (since OpenLayers 3.15.0).

TDesjardins/gwt-ol3,TDesjardins/gwt-ol3,sebasbaumh/gwt-ol3,TDesjardins/GWT-OL3-Playground,mazlixek/gwt-ol3,sebasbaumh/gwt-ol3,mazlixek/gwt-ol3,TDesjardins/gwt-ol3,TDesjardins/GWT-OL3-Playground,TDesjardins/GWT-OL3-Playground,sebasbaumh/gwt-ol3,mazlixek/gwt-ol3