New fake series created basing on OHLCSeries.

Adding newline series to a candlestick is possible:
- create new DefaultXYDataset
- add series to the dataset
- get chart's XYPlot  and set Dataset at next position wth the series
- get chart's XYPlot and set XYLineAndShapeRenderer at the position of the line series.

Generally, it is possibleto add multiple charts series withh different renderers.
All you have to do is add new datasets to the chart and corresponding renderers.