Prepare release 0.7.0

Change-Id: I86281204533ea893dd03f35fc0d9403be14f7da4
Refs: #5045
diff --git a/wscript b/wscript
index 1357ce8..7bf7069 100644
--- a/wscript
+++ b/wscript
@@ -26,7 +26,7 @@
 from waflib import Context, Logs, Utils
 import os, subprocess
 
-VERSION = '0.6.6'
+VERSION = '0.7.0'
 APPNAME = 'nfd'
 BUGREPORT = 'https://redmine.named-data.net/projects/nfd'
 URL = 'https://named-data.net/doc/NFD/'