Support the latest pkg:stream_channel

pkgs/sse/CHANGELOG.md

diff --git a/pkgs/sse/CHANGELOG.md b/pkgs/sse/CHANGELOG.md
index 2ed8fb7..da69420 100644
--- a/pkgs/sse/CHANGELOG.md
+++ b/pkgs/sse/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.2
+
+- Support the latest `package:stream_channel`.
+
 ## 2.0.1
 
 - Update to `package:uuid` version 2.0.

pkgs/sse/pubspec.yaml

diff --git a/pkgs/sse/pubspec.yaml b/pkgs/sse/pubspec.yaml
index c3abb41..67bdd66 100644
--- a/pkgs/sse/pubspec.yaml
+++ b/pkgs/sse/pubspec.yaml
@@ -1,5 +1,5 @@
 name: sse
-version: 2.0.1
+version: 2.0.2-dev
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/sse
 description: >-
@@ -15,7 +15,7 @@
   http: ^0.12.0+1
   logging: ^0.11.3+2
   pedantic: ^1.4.0
-  stream_channel: ^1.6.8
+  stream_channel: '>=1.6.8 <3.0.0'
   shelf: ^0.7.4
   uuid: ^2.0.0