Updated charted DEP to 0.4.X

packages/charted/tool/build_unicode_segmentation_data.dart

 //
 // Copyright 2014 Google Inc. All rights reserved.
 //
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd
 //
 
 library charted.tool.build_unicode_segmentation_data;
 
@@ skipping 35 matching lines @@
 Future<String> _getPropertiesFile() => http.read(UCD_PROPERTIES_URL);
 
 void _dumpPropertiesData(String data) {
   StringBuffer buffer = new StringBuffer();
   RegExp lineRegExp =
       new RegExp(r'([0-9A-F]{4})..([0-9A-F]{4})?\s+;\s([a-zA-Z]+)\s');
 
   buffer.write(HEADER);
   buffer.writeln('const CODE_POINT_BLOCKS = const[');
 
-  List<Iterable> items = [];
+  List<List> items = [];
   data.split('\n').forEach((String line) {
     Match match = lineRegExp.matchAsPrefix(line);
     if (match == null) return;
 
     int start = int.parse(match.group(1), radix:16);
     int end =
         match.group(2) == null ? start : int.parse(match.group(2), radix:16);
 
     items.add([start, end, CodeUnitCategory[match.group(3)]]);
     items.sort((a, b) => a.first.compareTo(b.first));
   });
 
   buffer.write(items.map((List range) => range.join(', ')).join(',\n  '));
   buffer.writeln();
   buffer.writeln('];');
   print(buffer.toString());
 }
 
 main() {
   _getPropertiesFile().then((data) => _dumpPropertiesData(data));
 }