[PRD-3687] (SelectBaseComponent timeout-focus) Adjusted default timeout values.
[FEAT] (protovis Symbols) Ability to register new kinds of Symbols (i.e. new shape types for pv.Dot). pv.Scene.registerSymbol.
[FEAT] (protovis pv.Dot aspectRatio) Dots now support the creation of rectangles and ellipsis, through the use of the new "aspectRatio" mark property.
[FIX] (pvcBaseChart#setData) NPE occurring when an null or empty data is supplied to #setData.
[FIX] (clearSelectionMode focusWindow) When selectionMode='focuswindow' clicking an empty area would clear the selection.
[FIX] (NPE nodata allowNoData TranslationOper) When data was set to null and the chart allowed having no data (like the BulletChart does), a NPE would occur.
  Now, setting data to null always results in setting it to an empty array.
[FIX] (log level) Some log calls were not using the correct level method.