unnecessary empty line
reworked, now stores a cached canvas with the image asset rather than raw dom Image, can now be probed with getPixelAlpha(x, y)
added drawRaw(), getPixel() and getPixelAlpha()
better event delegation
micro optimisation
custom pointOnElement methods to probe sprites and exact shapes of Circles with angular cutouts
addedd a circle and sprite to the example
new build with event delegation for sprites and circles