update polymer js to 0.4.0

pkg/polymer/lib/src/js/polymer/layout.html

 <!--
 Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 <style shim-shadowdom>
 /*******************************
@@ skipping 42 matching lines @@
   flex-wrap: wrap;
 }
 
 html /deep/ [layout][wrap-reverse] {
   -ms-flex-wrap: wrap-reverse;
   -webkit-flex-wrap: wrap-reverse;
   flex-wrap: wrap-reverse;
 }
 
 html /deep/ [flex] {
-  -ms-flex: 1;
+  -ms-flex: 1 1 0.000000001px;
   -webkit-flex: 1;
   flex: 1;
+  -webkit-flex-basis: 0.000000001px;
+  flex-basis: 0.000000001px;
+}
+
+html /deep/ [vertical][layout] > [flex][auto-vertical], html /deep/ [vertical][layout]::shadow [flex][auto-vertical] {
+  -ms-flex: 1 1 auto;
+  -webkit-flex-basis: auto;
+  flex-basis: auto;
 }
 
 html /deep/ [flex][auto] {
   -ms-flex: 1 1 auto;
-  -webkit-flex: 1 1 auto;
-  flex: 1 1 auto;
+  -webkit-flex-basis: auto;
+  flex-basis: auto;
 }
 
 html /deep/ [flex][none] {
   -ms-flex: none;
   -webkit-flex: none;
   flex: none;
 }
 
 html /deep/ [flex][one] {
   -ms-flex: 1;
@@ skipping 101 matching lines @@
   justify-content: center;
 }
 
 html /deep/ [layout][end-justified] {
   -ms-flex-pack: end;
   -webkit-justify-content: flex-end;
   justify-content: flex-end;
 }
 
 html /deep/ [layout][around-justified] {
-  -ms-flex-pack: around;
+  -ms-flex-pack: distribute;
   -webkit-justify-content: space-around;
   justify-content: space-around;
 }
 
 html /deep/ [layout][justified] {
   -ms-flex-pack: justify;
   -webkit-justify-content: space-between;
   justify-content: space-between;
 }
 
@@ skipping 65 matching lines @@
   box-sizing: border-box;
   margin: 1em 0.5em;
   padding: 1em;
   background-color: white;
   -webkit-box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.1);
   box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.1);
   border-radius: 5px 5px 5px 5px;
 }
 
 </style>