Update charted to 0.4.8 and roll

packages/charted/lib/core/scales/ordinal_scale.dart

Index: packages/charted/lib/core/scales/ordinal_scale.dart
diff --git a/packages/charted/lib/core/scales/ordinal_scale.dart b/packages/charted/lib/core/scales/ordinal_scale.dart
index 695f951b5dcd9ad72fb9bbd92f9cc9d8a8955e1c..dc9e7de61e03b511951bb89674033d78ebf3ef7b 100644
--- a/packages/charted/lib/core/scales/ordinal_scale.dart
+++ b/packages/charted/lib/core/scales/ordinal_scale.dart
@@ -19,8 +19,8 @@ class _OrdinalScale implements OrdinalScale {
   _OrdinalScale();
 
   _OrdinalScale._clone(_OrdinalScale source)
-      : _domain = source._domain,
-        _range = source._range,
+      : _domain = new List.from(source._domain),
+        _range = new List.from(source._range),
         _reset = source._reset,
         _rangeExtent = source._rangeExtent,
         _rangeBand = source._rangeBand {
@@ -120,11 +120,12 @@ class _OrdinalScale implements OrdinalScale {
     scale._reset = (_OrdinalScale s) {
       var start = range.first,
           stop = range.last,
-          step = (stop - start) / (s.domain.length - 1 + padding);
+          step = s.domain.length > 1
+              ? (stop - start - 2 * padding) / (s.domain.length - 1)
+              : 0;
 
       s._range = s._steps(
-          s.domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2,
-          step);
+          s.domain.length < 2 ? (start + stop) / 2 : start + padding, step);
       s._rangeBand = 0;
       s._rangeExtent = new Extent(start, stop);
     };
@@ -138,7 +139,10 @@ class _OrdinalScale implements OrdinalScale {
     scale._reset = (_OrdinalScale s) {
       var start = range.first,
           stop = range.last,
-          step = (stop - start) / s.domain.length - padding + 2 * outerPadding;
+          step = (stop - start - 2 * outerPadding) /
+              (s.domain.length > 1
+                  ? (s.domain.length - padding)
+                  : 1);
 
       s._range = s._steps(start + step * outerPadding, step);
       s._rangeBand = step * (1 - padding);
@@ -155,11 +159,12 @@ class _OrdinalScale implements OrdinalScale {
       var start = range.first,
           stop = range.last,
           step =
-          ((stop - start) / (s.domain.length - padding + 2 * outerPadding))
-              .floor(),
-          error = stop - start - (s.domain.length - padding) * step;
+          ((stop - start - 2 * outerPadding) /
+              (s.domain.length > 1
+                  ? (s.domain.length - padding)
+                  : 1)).floor();
 
-      s._range = s._steps(start + (error / 2).round(), step);
+      s._range = s._steps(start + outerPadding, step);
       s._rangeBand = (step * (1 - padding)).round();
       s._rangeExtent = new Extent(start, stop);
     };
@@ -171,9 +176,9 @@ class _OrdinalScale implements OrdinalScale {
   //
   // Properties that are valid only on quantitative scales.
   //
-
   bool clamp;
   bool nice;
   bool rounded;
   int ticksCount;
+  int forcedTicksCount;
 }