Good job !
Thanks. It could still use a little polish. One thing that I would like an opinion on is whether or not to bake in some excludes for the dependencies that Grails itself depends on that contain duplicate classes (even some of their own JARs have duplicate classes between them). I opted to not exclude anything by default (though support the exclusion if the user chooses), as I felt it was better to let the user see what they are starting with instead of sweeping it under the rug. There are also a few configuration options that I believe that I am not yet exposing that I need to get in there, though I may hold off until 1.2 is final.