update elements and fix some bugs

lib/firebase_auth.dart

 // DO NOT EDIT: auto-generated with `pub run custom_element_apigen:update`
 
 /// Dart API for the polymer element `firebase_auth`.
 @HtmlImport('firebase_auth_nodart.html')
 library polymer_elements.lib.src.firebase_element.firebase_auth;
 
 import 'dart:html';
 import 'dart:js' show JsArray, JsObject;
 import 'package:web_components/web_components.dart';
 import 'package:polymer_interop/polymer_interop.dart';
@@ skipping 79 matching lines @@
   ///
   /// If the login is successful, the `login` event is fired, with `e.detail.user`
   /// containing the authenticated user object from Firebase.
   ///
   /// If login fails, the `error` event is fired, with `e.detail` containing error
   /// information supplied from Firebase.
   ///
   /// If the browswer supports `navigator.onLine` network status reporting and the
   /// network is currently offline, the login attempt will be queued until the network
   /// is restored.
+  /// [params]: (optional)
+  /// [options]: (optional)
   login(params, options) =>
       jsElement.callMethod('login', [params, options]);
 
   /// Performs a logout attempt.
   ///
   /// If the login is successful, the `logout` event is fired.
   ///
   /// If login fails, the `error` event is fired, with `e.detail` containing error
   /// information supplied from Firebase.
   ///
@@ skipping 14 matching lines @@
 
   /// Sends a password reset email for a "password provider"-based user account.
   ///
   /// If the operation is successful, the `password-reset` event is fired.
   ///
   /// If the operation fails, the `error` event is fired, with `e.detail`
   /// containing error information supplied from Firebase.
   sendPasswordResetEmail(String email) =>
       jsElement.callMethod('sendPasswordResetEmail', [email]);
 }