:** in render config does not seem to work as advertised

``` clojure
[:node-create [:a :* :c :*] render-me]
```

matches a keypath of 

``` clojure
[:a :v :c :z]
```

but

``` clojure
[:node-create [:a :* :c :* :**] render-me]
```

does not. 

It is my understanding that :*\* should match 0 or more components.
