Prepare for dartdoc 0.23.1. (#1787)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82cd7f7..8b57d0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
+## 0.23.1
+* Make mixins appear under their own category, even if they are reexported (#1785)
+
 ## 0.23.0
 * Document covariant parameters and fields (#1782)
-* Implement new-style mixin support for Dart 2.1 (#1765)
+* Implement new-style mixin support for Dart 2.1 (#1765, #1752, #1778, #1779)
 * 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)
diff --git a/lib/src/version.dart b/lib/src/version.dart
index e54650e..37da91f 100644
--- a/lib/src/version.dart
+++ b/lib/src/version.dart
@@ -1,2 +1,2 @@
 // Generated code. Do not modify.
-const packageVersion = '0.23.0';
+const packageVersion = '0.23.1';
diff --git a/pubspec.lock b/pubspec.lock
index 2b4afde..71da10d 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -35,7 +35,7 @@
       name: build
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.7+3"
+    version: "1.0.1"
   build_cli_annotations:
     dependency: transitive
     description:
@@ -56,21 +56,21 @@
       name: build_resolvers
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2+5"
+    version: "0.2.2+6"
   build_runner:
     dependency: "direct dev"
     description:
       name: build_runner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.2"
+    version: "1.0.0"
   build_runner_core:
     dependency: transitive
     description:
       name: build_runner_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2+2"
+    version: "1.0.1"
   build_version:
     dependency: "direct dev"
     description:
@@ -337,6 +337,13 @@
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.6.2"
+  pedantic:
+    dependency: transitive
+    description:
+      name: pedantic
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
   platform:
     dependency: transitive
     description:
@@ -484,6 +491,13 @@
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.3"
+  timing:
+    dependency: transitive
+    description:
+      name: timing
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.1"
   typed_data:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 5ace3b8..22cdf3e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dartdoc
 # Also update the `version` field in lib/dartdoc.dart.
-version: 0.23.0
+version: 0.23.1
 author: Dart Team <misc@dartlang.org>
 description: A documentation generator for Dart.
 homepage: https://github.com/dart-lang/dartdoc
@@ -30,8 +30,8 @@
   yaml: ^2.1.0
 
 dev_dependencies:
-  build: ^0.12.6
-  build_runner: ^0.9.0
+  build: ^1.0.1
+  build_runner: ^1.0.0
   build_version: ^1.0.0
   dhttpd: ^3.0.0
   glob: ^1.1.5
@@ -41,8 +41,5 @@
   meta: ^1.0.0
   test: ^1.3.0
 
-dependency_overrides:
-  analyzer: 0.33.0
-
 executables:
   dartdoc: null
diff --git a/testing/test_package_docs/__404error.html b/testing/test_package_docs/__404error.html
index f2b9fb0..56b831b 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 0.23.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.1">
   <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 460ed5e..b314743 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 0.23.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.1">
   <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 f2b9fb0..56b831b 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 0.23.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.1">
   <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 460ed5e..b314743 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 0.23.0">
+  <meta name="generator" content="made with love by dartdoc 0.23.1">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>