Use propEqual to verify Point values, add a stub test for imageToWindowCoordinates
Use propEqual to verify Point values, add a stub test for imageToWindowCoordinates

shaunstanislaus/openseadragon,seanich/openseadragon,seanich/openseadragon,LarissaSmith/openseadragon,rdlester/openseadragon,jmnetus/openseadragon,Iced-Tea/openseadragon,jmnetus/openseadragon,shaunstanislaus/openseadragon,ricochet2200/openseadragon,rdlester/openseadragon,TMUND/openseadragon,mcanthony/openseadragon,avandecreme/openseadragon,openseadragon/openseadragon,msalsbery/openseadragon,LarissaSmith/openseadragon,goofwear/openseadragon,daverome/openseadragon,openseadragon/openseadragon,Iced-Tea/openseadragon,lidasong2014/openseadragon,ricochet2200/openseadragon,daverome/openseadragon,lidasong2014/openseadragon,msalsbery/openseadragon,avandecreme/openseadragon,mcanthony/openseadragon,goofwear/openseadragon,TMUND/openseadragon