Checking in changes prior to tagging of version 4.00.

Changelog diff is:

diff --git a/Changes b/Changes
index 46cb08c..3bb24f6 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,10 @@
 {{$NEXT}}

+4.00 2013-08-21T03:44:49Z
+
+    - Bump to 4.00!
+      (tokuhirom)
+
 3.99_01 2013-08-20T04:59:03Z

     - Switch to bootstrap 3