Disabled touch events by default and added method to Vew to enable them.
Updated to work with new Pisces font behavior of drawing from the baseline.
Fixed so that the chart will re-render if the width or height changes.
Added support for alpha in rectangle drawing shapes - including margins and background.  This is not perfect because it doesn't support 0 alpha.  Lowest is 1.  Need to look into how Android works for this.  Since numbers are argb, colors represented in rbg would always have 0 alpha - which is clearly not the intent.  Ideally the alpha byte should work in reverse to that 0 indicates ff and ff indicate 0.  But I don't want to rock the boat.  For now just set alpha = 1 if you want lowest possible.