0.1.0: First consumable rave

Rave now supports load extensions that automatically prioritize themselves via specificity. Rave also helps devs and extension authors determine when extensions are out of date. (This can happen, despite well-behaved devs and authors, if devs use both npm and bower simultaneously.)

Rave doesn't yet deal with builds, deployment, or testing. This release is good for evaluating the rave concepts as well as building quick prototype apps.