Update charted to 0.4.8 and roll

packages/quiver/test/io_test.dart

Index: packages/quiver/test/io_test.dart
diff --git a/packages/quiver/test/io_test.dart b/packages/quiver/test/io_test.dart
index a194f8b19ae5c725553fa11ba7d8879cfc0d0bd2..9f33565c90935c2ddfefb0828ffe7ffecb326b50 100644
--- a/packages/quiver/test/io_test.dart
+++ b/packages/quiver/test/io_test.dart
@@ -28,7 +28,7 @@ main() {
       var string = '箙、靫';
       var encoded = UTF8.encoder.convert(string);
       var data = [encoded.sublist(0, 3), encoded.sublist(3)];
-      var stream = new Stream.fromIterable(data);
+      var stream = new Stream<List<int>>.fromIterable(data);
       byteStreamToString(stream).then((decoded) {
         expect(decoded, string);
       });
@@ -38,7 +38,7 @@ main() {
       var string = 'blåbærgrød';
       var encoded = LATIN1.encoder.convert(string);
       var data = [encoded.sublist(0, 4), encoded.sublist(4)];
-      var stream = new Stream.fromIterable(data);
+      var stream = new Stream<List<int>>.fromIterable(data);
       byteStreamToString(stream, encoding: LATIN1).then((decoded) {
         expect(decoded, string);
       });
@@ -114,8 +114,13 @@ main() {
         files.add(e);
         return new Future.value(!e.path.endsWith('dir2'));
       }).then((_) {
-        expect(files.map((e) => e.path), unorderedEquals(
-            ["$testPath/dir", "$testPath/dir/file", "$testPath/dir2",]));
+        expect(
+            files.map((e) => e.path),
+            unorderedEquals([
+              "$testPath/dir",
+              "$testPath/dir/file",
+              "$testPath/dir2",
+            ]));
       });
     });