Prepare for 1.0.0.beta2 release.
Prepare for next development iteration.
Remove debugging.
Pin to a clojure version for smoketest.

lein 2.2.0 now injects nrepl as a userspace dependency, and without an
explicit clojure dep, it brings in 1.2.0, which we don't support (it
doesn't have IBlockingDeref).