Added Polymer 0.5.4

polymer_0.5.4/bower_components/core-overlay/core-overlay.html

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 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
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 <link rel="import" href="../polymer/polymer.html">
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 properties, it will not be overridden. The overlay should
 be positioned via css or imperatively using the `core-overlay-position` event.
 If the overlay is not positioned vertically via setting `top` or `bottom`, it
 will be centered vertically. The same is true horizontally via a setting to 
 `left` or `right`. In addition, css `margin` can be used to provide some space
 around the overlay. This can be used to ensure
 that, for example, a drop shadow is always visible around the overlay.
 
 @group Core Elements
 @element core-overlay
+@mixins Polymer.CoreResizer https://github.com/polymer/core-resizable
 @homepage github.io
 -->
 <!--
 Fired when the `core-overlay`'s `opened` property changes.
 
 @event core-overlay-open
 @param {Object} detail
 @param {Object} detail.opened the opened state
 -->
 <!--
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       }
     }
   }
 
   function getBackdrops() {
     return backdrops;
   }
 })();
 </script>
 </polymer-element>