Prep for 0.13.0-release (#1462)

* Prep for 0.13.0-release

* Add the index link to the changelog
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b22245..fd28a37 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+## 0.13.0
+* Fixed case where inherited members could be linked to the wrong mixin (#1434)
+* Added broken link detection to the search index.
+* Avoid parsing markdown for ModelElements unless we're actually going to use
+  the docs, speeding up generation overall by ~10% (#1417)
+* Add annotations to parameter documentation (#1432)
+* Change dartdoc style to use multiple independent scrolling columns (#1350)
+* Add scoring for ambiguous canonicalization, and a new comment directive,
+  canonicalFor, to override its decisions (#1455)
+* Add a hidden flag to drop text in docs imported from the SDK, and use this
+  flag in the integration test to make that test less fragile (#1457)
+* Add link to package homepage from index (#1460)
+
 ## 0.12.0
 * Generation performance improved from 20-65% on large packages (more improvement on packages
   with lower usage of comment references and complex inheritance chains, like angular2).
diff --git a/lib/dartdoc.dart b/lib/dartdoc.dart
index 3f1eacc..b31a60e 100644
--- a/lib/dartdoc.dart
+++ b/lib/dartdoc.dart
@@ -46,7 +46,7 @@
 
 const String name = 'dartdoc';
 // Update when pubspec version changes.
-const String version = '0.12.0';
+const String version = '0.13.0';
 
 final String defaultOutDir = path.join('doc', 'api');
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 63bd9be..9a942b6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dartdoc
 # Also update the `version` field in lib/dartdoc.dart.
-version: 0.12.0
+version: 0.13.0
 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/index.html b/testing/test_package_docs/index.html
index 7d01c26..182fe5b 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 0.12.0">
+  <meta name="generator" content="made with love by dartdoc 0.13.0">
   <meta name="description" content="test_package API docs, for the Dart programming language.">
   <title>test_package - Dart API docs</title>