Prepare release 0.4.0

Change-Id: Iec6b0ccd266f34605b0b3ad4ae95250049745953
diff --git a/docs/conf.py b/docs/conf.py
index f0e832d..d74db77 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -62,7 +62,7 @@
 
 # General information about the project.
 project = u'ChronoSync: A Synchronization Protocol in NDN'
-copyright = u'2014, Named Data Networking Project'
+copyright = u'2017, Named Data Networking Project'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/wscript b/wscript
index 9fcb8b3..5fe386f 100644
--- a/wscript
+++ b/wscript
@@ -3,7 +3,7 @@
 from waflib import Logs, Utils, Context
 import os
 
-VERSION = '0.3.0'
+VERSION = '0.4.0'
 APPNAME = 'ChronoSync'
 
 def options(opt):