update project.clj, clarify mapped-stacktrace docstring

Author: swannodette

project.clj

@@ -13,9 +13,9 @@
                  [org.clojure/tools.reader "0.8.10"]
                  [org.clojure/google-closure-library "0.0-20140718-946a7d39"]
                  [com.google.javascript/closure-compiler "v20150126"]
-                 [org.mozilla/rhino "1.7R4"]]
+                 [org.mozilla/rhino "1.7R5"]]
   :profiles {:1.5 {:dependencies [[org.clojure/clojure "1.5.1"]]}
-             :1.6 {:dependencies [[org.clojure/clojure "1.6.0-master-SNAPSHOT"]]}}
+             :1.6 {:dependencies [[org.clojure/clojure "1.6.0"]]}}
   :aliases {"test-all" ["with-profile" "test,1.5:test,1.6" "test"]
             "check-all" ["with-profile" "1.5:1.6" "check"]}
   :min-lein-version "2.0.0")

src/clj/cljs/repl.clj

@@ -249,9 +249,10 @@
       :line <integer>
       :column <integer>}*]
 
-   :file must be a URL path (without protocol) relative to :output-dir. The
-   returned mapped stacktrace will also contain :url entries to the original
-   sources if it can be determined from the classpath."
+   :file must be a URL path (without protocol) relative to :output-dir or a
+   identifier delimited by angle brackets. The returned mapped stacktrace will
+   also contain :url entries to the original sources if it can be determined
+   from the classpath."
   ([stacktrace] (mapped-stacktrace stacktrace nil))
   ([stacktrace opts]
     (let [read-source-map' (memoize read-source-map)