DataObjects.Net v4.0 licensing model is changed

Please see DataObjects.Net Wiki: Commercial Licenses page for details.

Web site pages related to licensing aren't updated yet - we postponed this update till Monday to deliver it along with a set of other planned changes.

And finally: right now we provide 30% discount for early adopters of the new version: use DO40EA coupon code on "your cart" page (at share-it!) to get it.