prep for publishing 2.0.3

pkgs/package_config/CHANGELOG.md

diff --git a/pkgs/package_config/CHANGELOG.md b/pkgs/package_config/CHANGELOG.md
index 8c58fbb..4e095f2 100644
--- a/pkgs/package_config/CHANGELOG.md
+++ b/pkgs/package_config/CHANGELOG.md
@@ -1,4 +1,8 @@
-## 2.0.3-dev
+## 2.0.3
+
+- Improve file read performance; improve lookup performance.
+- Emit an error when a package is inside the package root of another package.
+- Fix a link in the readme.
 
 ## 2.0.2
 

pkgs/package_config/README.md

diff --git a/pkgs/package_config/README.md b/pkgs/package_config/README.md
index 712a23c..9e2e41f 100644
--- a/pkgs/package_config/README.md
+++ b/pkgs/package_config/README.md
@@ -1,5 +1,6 @@
 [![Build Status](https://github.com/dart-lang/package_config/workflows/Dart%20CI/badge.svg)](https://github.com/dart-lang/package_config/actions?query=workflow%3A"Dart+CI"+branch%3Amaster)
 [![pub package](https://img.shields.io/pub/v/package_config.svg)](https://pub.dev/packages/package_config)
+[![package publisher](https://img.shields.io/pub/publisher/package_config.svg)](https://pub.dev/packages/package_config/publisher)
 
 Support for working with **Package Configuration** files as described
 in the Package Configuration v2 [design document](https://github.com/dart-lang/language/blob/master/accepted/2.8/language-versioning/package-config-file-v2.md).

pkgs/package_config/pubspec.yaml

diff --git a/pkgs/package_config/pubspec.yaml b/pkgs/package_config/pubspec.yaml
index d4ed6b9..ea0f3b4 100644
--- a/pkgs/package_config/pubspec.yaml
+++ b/pkgs/package_config/pubspec.yaml
@@ -1,5 +1,5 @@
 name: package_config
-version: 2.0.3-dev
+version: 2.0.3
 description: Support for reading and writing Dart Package Configuration files.
 repository: https://github.com/dart-lang/package_config