minor cleanups, mostly formatting

src/aging_session/memory.clj

@@ -1,7 +1,9 @@
 (ns aging-session.memory
   "In-memory session storage with mortality."
-  (:require [ring.middleware.session.store :refer :all])
-  (:import java.util.UUID))
+  (:require
+    [ring.middleware.session.store :refer :all])
+  (:import
+    [java.util UUID]))
 
 (defrecord SessionEntry [timestamp value])
 
@@ -83,8 +85,8 @@
 
 (defn in-thread
   "Run a function in a thread."
-  [afn]
-  (.start (Thread. afn)))
+  [f]
+  (.start (Thread. ^Runnable f)))
 
 (defn aging-memory-store
   "Creates an in-memory session storage engine."

test/aging_session/event_test.clj

@@ -1,8 +1,8 @@
 (ns aging-session.event_test
   (:require
-    [aging-session.event :as event]
     [clojure.test :refer :all]
     [ring.middleware.session.store :refer :all]
+    [aging-session.event :as event]
     [aging-session.memory :refer :all]))
 
 (deftest session-expiry