Fixed charting error.

Version 4.0 Updates:
- Added inputs & features:
* 'Sentiment range candles' - allow triggers this amount of candles after a sentiment change (requires Price Action Strength);
* 'Avg price filter' - allow triggers only if new entry would improve average entry price (assuming the position will exit on an opposite signal);
- Improved indicator buffer calculations, got rid of double signals on chart refresh;

- New input 'Show only latest signal'. If this is enabled, the indicator shows only the most recent arrow/signal
- Compatibility with RM Trading Solutions 'Price Action Strength' indicator