So it would appear that since the development environment for Dynamics Nav 2013 was barely changed, my integration dll will work for 2013 development as well.  The only thing preventing this was the lack of support for Query objects in the NavObjectType enumeration.  I have since added support for this new object type to the library so it should work for 2013 now.  Sadly, I do not have the ability to test this myself, so I will have to rely on the community to validate this.