Prepare 1.3.0 release
diff --git a/pubspec.yaml b/pubspec.yaml
index 6e9d47f..9ccb43e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: oauth2
-version: 1.2.3
+version: 1.3.0
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/oauth2
 description: >-