Prepare to publish (#81)

Drop changelog entry for non-user-facing change.
Drop `-dev` suffix from version.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index badeaf7..2b90a0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,6 @@
-## 2.1.1-dev
+## 2.1.1
 
 * Require Dart 2.14
-* Migrate to `package:lints`.
 * Populate the pubspec `repository` field.
 * Handle multichannel messages where the ID element is a `double` at runtime
   instead of an `int`. When reading an array with `dart2wasm` numbers within the
diff --git a/pubspec.yaml b/pubspec.yaml
index 5e86fc3..ff6a50c 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: stream_channel
-version: 2.1.1-dev
+version: 2.1.1
 description: >-
   An abstraction for two-way communication channels based on the Dart Stream
   class.