First cut at behaviors. This just implements the lifecycle methodsportion. We may get the rest for …

lib/polymer_micro.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 @HtmlImport('polymer_micro.html')
 library polymer.lib.polymer_micro;
 
 import 'dart:html';
 
 export 'package:polymer_interop/polymer_interop.dart';
 import 'package:web_components/web_components.dart' show HtmlImport;
+export 'src/common/behavior.dart';
 import 'src/common/polymer_mixin.dart';
 export 'src/common/polymer_mixin.dart';
 export 'src/common/polymer_register.dart';
 export 'src/common/polymer_serialize.dart';
 import 'src/common/js_proxy.dart';
 export 'src/common/js_proxy.dart';
 export 'src/common/property.dart';
 export 'init.dart' show initPolymer;
 
 class PolymerElement extends HtmlElement with PolymerMixin, JsProxy {
   PolymerElement.created() : super.created() {
     polymerCreated();
   }
 }