Revert to old nREPL
Revert to old nREPL

There were breaking changes in nrepl 0.4.3, resulting in this issue when
running `lein trampoline run` here:

ClassCastException nrepl.server.Server cannot be cast to java.base/java.util.concurrent.Future
        clojure.core/deref-future (core.clj:2180)
        clojure.core/deref (core.clj:2201)
        reply.eval-modes.nrepl/get-connection (nrepl.clj:161)
        reply.eval-modes.nrepl/main (nrepl.clj:202)
        reply.main/launch-nrepl/fn--2245 (main.clj:79)
        clojure.core/with-redefs-fn (core.clj:6861)
        reply.main/launch-nrepl (main.clj:78)
        reply.main/launch (main.clj:95)
        reply.main/-main (main.clj:105)
        clojure.lang.Var.invoke (Var.java:375)
        clojure.lang.Var.applyTo (Var.java:700)
        reply.ReplyMain.main (ReplyMain.java:14)

trptcolin/reply,trptcolin/reply