Excluding Clojure dep from sjacket - was causing lots of 'version range' warnings, and we declare a Clojure dependency anyway.

e.g.:

(WARNING!!! version ranges found for:)
([com.keminglabs/cljx "0.4.0"] -> [org.clojars.trptcolin/sjacket "0.1.0.6"] -> [org.clojure/clojure "[1.3.0,)"]
Consider using [com.keminglabs/cljx "0.4.0" :exclusions [org.clojure/clojure]].)
([com.keminglabs/cljx "0.4.0"] -> [org.clojars.trptcolin/sjacket "0.1.0.6"] -> [net.cgrand/regex "1.1.0"] -> [org.clojure/clojure "[1.2.0,)"]
Consider using [com.keminglabs/cljx "0.4.0" :exclusions [org.clojure/clojure]].)
([com.keminglabs/cljx "0.4.0"] -> [org.clojars.trptcolin/sjacket "0.1.0.6"] -> [net.cgrand/parsley "0.9.1"] -> [org.clojure/clojure "[1.2.0,)"]
Consider using [com.keminglabs/cljx "0.4.0" :exclusions [org.clojure/clojure]].)
([com.keminglabs/cljx "0.4.0"] -> [org.clojars.trptcolin/sjacket "0.1.0.6"] -> [net.cgrand/parsley "0.9.1"] -> [net.cgrand/regex "1.1.0"] -> [org.clojure/clojure "[1.2.0,)"]
Consider using [com.keminglabs/cljx "0.4.0" :exclusions [org.clojure/clojure]].)