Add get-loggers function to get existing re-frame loggers

CHANGES.md

@@ -4,6 +4,7 @@
 
 - [#200](https://github.com/Day8/re-frame/pull/200) Remove trailing spaces from console logging 
 - [#248](https://github.com/Day8/re-frame/pull/200) Provide after interceptor with `db` coeffect, if no `db` effect was produced.
+- Add re-frame.loggers/get-loggers function to well, you know.
 
 ## 0.8.0  (2016.08.19)
 

src/re_frame/loggers.cljc

@@ -44,3 +44,8 @@
   [new-loggers]
   (assert  (empty? (difference (set (keys new-loggers)) (-> @loggers keys set))) "Unknown keys in new-loggers")
   (swap! loggers merge new-loggers))
+
+(defn get-loggers
+  "Get the current logging functions used by re-frame."
+  []
+  @loggers)