build+core: fix version number

v0.3 was tagged a long time ago.

Change-Id: Ifca6f01e0aac1b01303ae9fe5b40b3f354b9bb41
diff --git a/wscript b/wscript
index 76708ce..5a34e32 100644
--- a/wscript
+++ b/wscript
@@ -1,6 +1,6 @@
 # -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 
-VERSION = '0.2'
+VERSION = '0.3'
 APPNAME = 'ndn-tools'
 
 from waflib import Utils