Update charted to 0.4.8 and roll

packages/charted/lib/charts/chart_theme.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
 //
 
 part of charted.charts;
 
@@ skipping 66 matching lines @@
   /// using a quantitative scale.
   int get axisTickCount;
 
   /// Size of ticks on the axis. When [measureTickSize] <= [FILL_RENDER_AREA],
   /// the painted tick will span complete height/width of the rendering area.
   int get axisTickSize;
 
   /// Space between axis and label for dimension axes
   int get axisTickPadding;
 
-  /// Space between the first tick and the measure axes.
+  /// Space between the first tick and the measure axes in pixels.
   /// Only used on charts that don't have renderers that use "bands" of space
   /// on the dimension axes
-  ///
-  /// Represented as a percentage of space between two consecutive ticks. The
-  /// space between two consecutive ticks is also known as the segment size.
   double get axisOuterPadding;
 
   /// Space between the two bands in the chart.
   /// Only used on charts that have renderers that use "bands" of space on the
   /// dimension axes.
   ///
   /// Represented as a percentage of space between two consecutive ticks. The
   /// space between two consecutive ticks is also known as the segment size.
   double get axisBandInnerPadding;
 
-  /// Space between the first band and the measure axis.
+  /// Space between the first band and the measure axis in pixels.
   /// Only used on charts that have renderers that use "bands" of space on the
   /// dimension axes.
-  ///
-  /// Represented as a percentage of space between two consecutive ticks. The
-  /// space between two consecutive ticks is also known as the segment size.
   double get axisBandOuterPadding;
 
   /// When set to true, the vertical axes resize to fit the labels.
   bool get verticalAxisAutoResize => true;
 
   /// Width of vertical axis when it is not resizing automatically. If
   /// [autoResizeAxis] is set to true, [verticalAxisWidth] will be used as the
   /// maximum width of the vertical axis.
   ///
   /// Height of vertical axis is automatically computed based on height of the
@@ skipping 11 matching lines @@
   ///
   /// Font string must be of the following form:
   ///   "bold italic 16px Roboto"
   ///   "bold 16px Roboto"
   ///   "italic 16px Roboto"
   ///   "16px Roboto"
   ///
   /// When not specified, SVGTextElement's metrics API will be used.
   String get ticksFont => null;
 }