For a long time, managing Grails dependencies simply meant putting them in your application's lib directory. Then came Grails 1.2 and the dependency DSL: you could finally declare your dependencies and have Grails automatically download them and make them available to your app. Great! Now, Grails 1.3 has brought the dependency DSL to the realm of plugins. As for the dependencies, some plugins include libraries you don't need or (even worse) break your application. With the dependency DSL, you can explicitly exclude problematic libraries. Those are some of the reasons why this change might be…