prepare for release (#61)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index af73106..50deb7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.13.2+1
+
+* Changed the implementation of `Set` and `List` classes to use base classes
+  from `dart:collection`.
+
 ## 0.13.2
 
  * Support the latest release of `pkg/csslib`.
diff --git a/pubspec.yaml b/pubspec.yaml
index 09bf52e..acbe3f6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: html
-version: 0.13.3-dev
+version: 0.13.2+1
 author: Dart Team <misc@dartlang.org>
 description: A library for working with HTML documents. Previously known as html5lib.
 homepage: https://github.com/dart-lang/html