npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.4.0/bower_components/core-shared-lib/core-shared-lib.html

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 <link rel="import" href="../polymer/polymer.html">
 
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       } else {
         this.instances.push(instance);
       }
     }
     
   };
   
 })();
 </script>
 </polymer-element>