Prepare for dartdoc 0.23.0 (#1784)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 498a68b..82cd7f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 0.23.0
+* Document covariant parameters and fields (#1782)
+* Implement new-style mixin support for Dart 2.1 (#1765)
+* Remove direct dependency on front_end package (#1780)
+* Travis/testing and grinder script changes (#1777, #1771)
+* Captions on class pages now use nouns consistently (#1767)
+* Minor changes to categories style (#1761)
+
 ## 0.22.0
 * Documentation updates. (#1760)
 * Fix incompatibility with head analyzer (endsWith exception). (#1768)
diff --git a/lib/src/version.dart b/lib/src/version.dart
index f0ca228..e54650e 100644
--- a/lib/src/version.dart
+++ b/lib/src/version.dart
@@ -1,2 +1,2 @@
 // Generated code. Do not modify.
-const packageVersion = '0.22.0';
+const packageVersion = '0.23.0';
diff --git a/pubspec.yaml b/pubspec.yaml
index 2a92c4d..5ace3b8 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dartdoc
 # Also update the `version` field in lib/dartdoc.dart.
-version: 0.22.0
+version: 0.23.0
 author: Dart Team <misc@dartlang.org>
 description: A documentation generator for Dart.
 homepage: https://github.com/dart-lang/dartdoc
diff --git a/testing/test_package_docs/__404error.html b/testing/test_package_docs/__404error.html
index b05aabd..f2b9fb0 100644
--- a/testing/test_package_docs/__404error.html
+++ b/testing/test_package_docs/__404error.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta name="generator" content="made with love by dartdoc 0.22.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.0">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>
 
diff --git a/testing/test_package_docs/index.html b/testing/test_package_docs/index.html
index f71892d..460ed5e 100644
--- a/testing/test_package_docs/index.html
+++ b/testing/test_package_docs/index.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta name="generator" content="made with love by dartdoc 0.22.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.0">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>
 
diff --git a/testing/test_package_docs_dev/__404error.html b/testing/test_package_docs_dev/__404error.html
index b05aabd..f2b9fb0 100644
--- a/testing/test_package_docs_dev/__404error.html
+++ b/testing/test_package_docs_dev/__404error.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta name="generator" content="made with love by dartdoc 0.22.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.0">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>
 
diff --git a/testing/test_package_docs_dev/index.html b/testing/test_package_docs_dev/index.html
index f71892d..460ed5e 100644
--- a/testing/test_package_docs_dev/index.html
+++ b/testing/test_package_docs_dev/index.html
@@ -4,7 +4,7 @@
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta name="generator" content="made with love by dartdoc 0.22.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.0">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>