prep to publish (dart-lang/sse#12)

pkgs/sse/CHANGELOG.md

diff --git a/pkgs/sse/CHANGELOG.md b/pkgs/sse/CHANGELOG.md
index 87bb5ef..8246f13 100644
--- a/pkgs/sse/CHANGELOG.md
+++ b/pkgs/sse/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.3
+
+- Fix an issue where messages could come out of order.
+
 ## 2.0.2
 
 - Support the latest `package:stream_channel`.

pkgs/sse/pubspec.yaml

diff --git a/pkgs/sse/pubspec.yaml b/pkgs/sse/pubspec.yaml
index 923326e..649ffc2 100644
--- a/pkgs/sse/pubspec.yaml
+++ b/pkgs/sse/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sse
-version: 2.0.2
+version: 2.0.3
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/sse
 description: >-