slider: value not aligned to step when set programatically

From the slider specs http://wiki.jqueryui.com/Slider#specs "value option/method: the value option is not restricted by min/max/step. What is returned by the value method is restricted by min (>=), max (<=), and step (even multiple)"

The slider method value currently returns a val restricted by min and max but not aligned to step. All values from this method should be aligned to step, though the value option underneath can contain an unaligned value, to prevent data loss.