release 0.12.5 (#53)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d30380..0a3cc5d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md

@@ -1,3 +1,7 @@
+#### 0.12.5
+  * Update to not use deprecated analyzer apis.
+  * Update analyzer minimum version to 0.27.1.
+
 #### 0.12.4
   * Update to JS version
     [0.7.23](https://github.com/webcomponents/webcomponentsjs/tree/v0.7.23).

diff --git a/pubspec.yaml b/pubspec.yaml
index 3c43f2c..b65a692 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml

@@ -1,5 +1,5 @@
 name: web_components
-version: 0.12.4
+version: 0.12.5
 author: Polymer.dart Authors <[email protected]>
 homepage: https://github.com/dart-lang/web-components/
 description: >