Prepare to publish (#129)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6ec9e4..a4c6f0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 3.0.2-dev
+## 3.0.2
 
 * Require Dart 2.14.0.
 * Fix bug calculating hashes for content larger than 512MB when compiled to JS.
diff --git a/pubspec.yaml b/pubspec.yaml
index 44c3207..18656ce 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: crypto
-version: 3.0.2-dev
+version: 3.0.2
 description: Implementations of SHA, MD5, and HMAC cryptographic functions
 repository: https://github.com/dart-lang/crypto