From: Lev Lamberov <dogsleg@debian.org>
Subject: Fix version number

This patch fixes version number to follow MELPA stable.

--- a/concurrent.el
+++ b/concurrent.el
@@ -3,7 +3,7 @@
 ;; Copyright (C) 2010-2016  SAKURAI Masashi

 ;; Author: SAKURAI Masashi <m.sakurai at kiwanami.net>
-;; Version: 0.5.0
+;; Version: 0.5.1
 ;; Keywords: deferred, async, concurrent
 ;; Package-Requires: ((emacs "24.3") (deferred "0.5.0"))
 ;; URL: https://github.com/kiwanami/emacs-deferred/blob/master/README-concurrent.markdown