Playing with the tests a bit
Better description of the project
Per property duration ratio or fx supported; Reformatted the options objects
Give the init process its own function
Extract some methods out the plugin function in order to be able to test them; Reset to start values only if needed (this fix a nasty glitch on mousemove)
Made _validateEach accssible from the outside world, i.e. $._eventAnimate
Fixed a bug in _validateEach (early exit was wrong); _setTimeout now receives the full option object;