updated the assembler-racer lib to include private methods for adding and removing listeners to racer models.  Doesn't seem to fix the issue where lots of listeners exist on the racer model _events hash after navigating around the page, because it looks like views aren't being remove()'d properly by their parent containers, either that or i'm not correctly using swapView at the correct view heirarchy within the controllers.  need to add tests around that functionality