Revert switch from defn to deftrack
Revert switch from defn to deftrack

It was breaking tests. Also, I realized it was unnecessary and would
need an extra deref to actually work.

tbeddy/zetawar,Zetawar/zetawar,Zetawar/zetawar,Zetawar/zetawar,tbeddy/zetawar,tbeddy/zetawar