Affects Version/s: None
Fix Version/s: Release 1.1
vector-zip and seq-zip do not transport metadata on the nodes.
Reported by Justin Balthrop on #clojure.
1. Create a vector with metadata.
2. Create a vector zipper.
3. Move in the tree.
4. Recreate the root.
Now the metadata is lost.
Move the metadata in the make-node function of the vector zipper.