update elements and fix some bugs

lib/iron_selectable.dart

 // DO NOT EDIT: auto-generated with `pub run custom_element_apigen:update`
 
 /// Dart API for the polymer element `iron_selectable`.
 @HtmlImport('iron_selectable_nodart.html')
 library polymer_elements.lib.src.iron_selector.iron_selectable;
 
 import 'dart:html';
 import 'dart:js' show JsArray, JsObject;
 import 'package:web_components/web_components.dart';
 import 'package:polymer_interop/polymer_interop.dart';
 import 'iron_selection.dart';
 
 
 @BehaviorProxy(const ['Polymer', 'IronSelectableBehavior'])
 abstract class IronSelectableBehavior implements CustomElementProxyMixin {
 
   /// The event that fires from items when they are selected. Selectable
   /// will listen for this event from items and update the selection state.
   /// Set to empty string to listen to no events.
   String get activateEvent => jsElement[r'activateEvent'];
   set activateEvent(String value) { jsElement[r'activateEvent'] = value; }
 
   /// If you want to use the attribute value of an element for `selected` instead of the index,
   /// set this to the name of the attribute.
   String get attrForSelected => jsElement[r'attrForSelected'];
   set attrForSelected(String value) { jsElement[r'attrForSelected'] = value; }
 
-  /// The set of excluded elements where the key is the `localName`
-  /// of the element that will be ignored from the item list.
-  get excludedLocalNames => jsElement[r'excludedLocalNames'];
-  set excludedLocalNames(value) { jsElement[r'excludedLocalNames'] = (value is Map || (value is Iterable && value is! JsArray)) ? new JsObject.jsify(value) : value;}
-
   /// Returns an array of selectable items.
   get items => jsElement[r'items'];
 
   /// This is a CSS selector string.  If this is set, only items that match the CSS selector
   /// are selectable.
   String get selectable => jsElement[r'selectable'];
   set selectable(String value) { jsElement[r'selectable'] = value; }
 
   /// Gets or sets the selected element. The default is to use the index of the item.
   get selected => jsElement[r'selected'];
@@ skipping 21 matching lines @@
       jsElement.callMethod('select', [value]);
 
   /// Selects the next item.
   selectNext() =>
       jsElement.callMethod('selectNext', []);
 
   /// Selects the previous item.
   selectPrevious() =>
       jsElement.callMethod('selectPrevious', []);
 }