more cleanups & docs

src/cljs/emptyhead/util/logging.cljs

@@ -0,0 +1,10 @@
+(ns emptyhead.util.logging)
+
+(defn error [message & data]
+  (throw (ex-info message {:data data})))
+
+(defn warn [message & data]
+  (error message data))
+
+(defn message [message & data]
+  (println message {:data data}))