initial Release

This is the first formal release of this class.

The basic idea for listbox class is to facilitate working with 4D listboxes in the context of MVC. Listboxes in 4D forms are often tightly coupled with the data in them. This was required prior to ORDA but with the introduction of dot notation and the object oriented architecture it's built on the data can be handled without that tight binding.

An instance of the listbox class is functional without even being associated with a listbox form object. Changes to the data can be, I feel should be, written to the data and then the listbox will update itself to reflect those changes.