min and max values don't update if they are computed values

[justin-hackin]

I set the max to a computed value but it didn't update the slider. This was also a problem with the generic input helper. I dove into the code and realized all I had to do was add a "max > element.max" to the propertyBindings. I was throughly pleased because even when you modify an HTML input max, the position of the slider does not change. I'm not sure if this is a common use case but I struggled with it for a considerable period before coming up with this solution so maybe making step, min, max propertyBindings could be useful. Thanks for making it easy to extend the range slider :)

[justin-hackin]

Dang, I was mistaken, max binding works fine now ... excuse the noise