ObservableObject or ObservableProperty modified flag available ?

[stephenhauck]

I was about to write this functionality into my model class that is an ObservableObject and I thought I would ask first.

First off, LOVE the library!

Is there a flag in the ObservableObject or ObservableProperty that is set when a property of the object is modified to indicate it has been modified ?

I realize I can do this with the tools provided quite easily but I did not want to duplicate effort if it exists somewhere ?

THANKS !