Fixed timer decorator to handle functions with return values.

timer.py

@@ -6,9 +6,10 @@ def timer(logger=print):
     def decorator(target):
         def wrapper(*args, **kwargs):
             initial = clock()
-            target(*args, **kwargs)
+            retval = target(*args, **kwargs)
             msg = "%s finished in %.2f seconds." % (target.__name__, (clock() - initial))
-            return logger(msg)
+            logger(msg)
+            return retval
         return wrapper
     return decorator