Increment package versions for stack trace changes.

R=rnystrom@google.com
BUG=

Review URL: https://codereview.chromium.org//110613003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/watcher@30997 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/pubspec.yaml b/pubspec.yaml
index 93d8eb4..90b93e5 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: watcher
-version: 0.9.0
+version: 0.9.1
 author: "Dart Team <misc@dartlang.org>"
 homepage: http://www.dartlang.org
 description: >
@@ -9,7 +9,7 @@
 dependencies:
   crypto: ">=0.9.0 <0.10.0"
   path: ">=0.9.0 <0.10.0"
-  stack_trace: ">=0.9.0 <0.10.0"
+  stack_trace: ">=0.9.1 <0.10.0"
 dev_dependencies:
   scheduled_test: ">=0.9.0 <0.10.0"
   unittest: ">=0.9.0 <0.10.0"