Update charted to 0.4.8 and roll

packages/intl/lib/date_symbol_data_http_request.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-/**
- * This file should be imported, along with date_format.dart in order to read
- * locale data via http requests to a web server..
- */
+/// This file should be imported, along with date_format.dart in order to read
+/// locale data via http requests to a web server..
 library date_symbol_data_http_request;
 
 import 'dart:async';
 
 import 'date_symbols.dart';
 import 'intl.dart';
 import 'src/data/dates/locale_list.dart';
 import 'src/date_format_internal.dart';
 import 'src/http_request_data_reader.dart';
 import 'src/lazy_locale_data.dart';
 
 export 'src/data/dates/locale_list.dart';
 
-/**
- * This should be called for at least one [locale] before any date formatting
- * methods are called. It sets up the lookup for date symbols using [url].
- * The [url] parameter should end with a "/". For example,
- *   "http://localhost:8000/dates/"
- */
+/// This should be called for at least one [locale] before any date formatting
+/// methods are called. It sets up the lookup for date symbols using [url].
+/// The [url] parameter should end with a "/". For example,
+///   "http://localhost:8000/dates/"
 Future initializeDateFormatting(String locale, String url) {
   var reader = new HttpRequestDataReader('${url}symbols/');
   initializeDateSymbols(() => new LazyLocaleData(
       reader, _createDateSymbol, availableLocalesForDateFormatting));
   var reader2 = new HttpRequestDataReader('${url}patterns/');
   initializeDatePatterns(() =>
       new LazyLocaleData(reader2, (x) => x, availableLocalesForDateFormatting));
   var actualLocale = Intl.verifiedLocale(
       locale, (l) => availableLocalesForDateFormatting.contains(l));
   return initializeIndividualLocaleDateFormatting((symbols, patterns) {
-    return Future.wait(
-        [symbols.initLocale(actualLocale), patterns.initLocale(actualLocale)]);
+    return Future.wait(<Future>[
+      symbols.initLocale(actualLocale),
+      patterns.initLocale(actualLocale)
+    ]);
   });
 }
 
-/** Defines how new date symbol entries are created. */
+/// Defines how new date symbol entries are created.
 DateSymbols _createDateSymbol(Map map) =>
     new DateSymbols.deserializeFromMap(map);