prep to release packages (#1739)

diff --git a/pkgs/test/CHANGELOG.md b/pkgs/test/CHANGELOG.md
index c613763..704912f 100644
--- a/pkgs/test/CHANGELOG.md
+++ b/pkgs/test/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 1.21.4-dev
+## 1.21.4
 
 * Make the labels for test loading more readable in the compact and expanded
   reporters, use gray instead of black.
diff --git a/pkgs/test/pubspec.yaml b/pkgs/test/pubspec.yaml
index 4fbef54..45b8cc2 100644
--- a/pkgs/test/pubspec.yaml
+++ b/pkgs/test/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test
-version: 1.21.4-dev
+version: 1.21.4
 description: >-
   A full featured library for writing and running Dart tests across platforms.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test
diff --git a/pkgs/test_api/CHANGELOG.md b/pkgs/test_api/CHANGELOG.md
index 2b57eec..62aafe6 100644
--- a/pkgs/test_api/CHANGELOG.md
+++ b/pkgs/test_api/CHANGELOG.md
@@ -1,4 +1,6 @@
-## 0.4.12-dev
+## 0.4.12
+
+* Internal cleanup.
 
 ## 0.4.11
 
diff --git a/pkgs/test_api/pubspec.yaml b/pkgs/test_api/pubspec.yaml
index 7b9ae0a..ecc2961 100644
--- a/pkgs/test_api/pubspec.yaml
+++ b/pkgs/test_api/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_api
-version: 0.4.12-dev
+version: 0.4.12
 description: A library for writing Dart tests.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test_api
 
diff --git a/pkgs/test_core/CHANGELOG.md b/pkgs/test_core/CHANGELOG.md
index f94fbd1..9316f7c 100644
--- a/pkgs/test_core/CHANGELOG.md
+++ b/pkgs/test_core/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.4.16-dev
+## 0.4.16
 
 * Make the labels for test loading more readable in the compact and expanded
   reporters, use gray instead of black.
diff --git a/pkgs/test_core/pubspec.yaml b/pkgs/test_core/pubspec.yaml
index 2c94c66..28c1921 100644
--- a/pkgs/test_core/pubspec.yaml
+++ b/pkgs/test_core/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_core
-version: 0.4.16-dev
+version: 0.4.16
 description: A basic library for writing tests and running them on the VM.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test_core