bump version

This closes #1899
diff --git a/tutorial/dart/server/pubspec.yaml b/tutorial/dart/server/pubspec.yaml
index e09465e..bdd74b8 100644
--- a/tutorial/dart/server/pubspec.yaml
+++ b/tutorial/dart/server/pubspec.yaml
@@ -16,7 +16,7 @@
 # under the License.
 
 name: tutorial_server
-version: 0.13.0
+version: 0.14.0
 description: A Dart server to support the Apache Thrift tutorial
 author: Apache Thrift Developers <dev@thrift.apache.org>
 homepage: http://thrift.apache.org