core: bump version to 0.2.0

refs #1709

Change-Id: I52dadd87ebc1f36f2b48070a4e809f07716369d7
diff --git a/wscript b/wscript
index 7b42d28..93c6a2d 100644
--- a/wscript
+++ b/wscript
@@ -23,7 +23,7 @@
 NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-VERSION = "0.1.0"
+VERSION = "0.2.0"
 APPNAME = "nfd"
 BUGREPORT = "http://redmine.named-data.net/projects/nfd"
 URL = "http://named-data.net/doc/NFD/"