- Added a new `ex.NineSlice` `Graphic` for creating arbitrarily resizable rectangular regions, useful for creating UI, backgrounds, and other resizable elements.
  ```typescript
  var nineSlice = new ex.NineSlice({
    width: 300,
    height: 100,
    source: inputTile,
    sourceConfig: {
      width: 64,
      height: 64,
      topMargin: 5,
      leftMargin: 7,
      bottomMargin: 5,
      rightMargin: 7
    },
    destinationConfig: {
      drawCenter: true,
      horizontalStretch: ex.NineSliceStretch.Stretch,
      verticalStretch: ex.NineSliceStretch.Stretch
    }
  });

  actor.graphics.add(nineSlice);
  ```