Ability to change quantity in cart slideout.

[iaminawe]

The implementation for changing the quantity is very slick with the updating totals on the main checkout page.

I would love to see the ability to change the quantity of the amount of items directly in the cart slideout or even on the actual product listing before you get to the main checkout page.

My reason for this request is that on a wholesale focused store - the amount of the item being ordered becomes more important and I think would be best to be able to deal with earlier in the checkout process, and then of course adjust on the final checkout screen if needed.

Thanks again for this very useful work