TO DO - Uize.Widget.ImageWipe

This is a TO DO document for the Uize.Widget.ImageWipe module.

	factor out code that looks like it could be common between Uize.Widget.Swap.Image and this class (some of this code was intentionally derived from Uize.Widget.Swap and Uize.Widget.Swap.Image to make it easier to contemplate merging / refactoring later)
	come up with a better mechanism than the allToFull property

1. - problem with the current finalCoords approach is that it doesn't account for wipes where the pane size doesn't change over time

	initial seed coords
	calculated matrix sector coords
	full image coords

	should be able to be continuous between two limits
	one application for refactored mechanism would be a fading zoom from center