Added option to see ATR Range Boxes.
If there is a candle that meets the requirements for an Expansion Candle there is now the option to draw a box around the range selected from your ATR source. Box will continue to extend until price breaks the top or bottom of the range.
You can also chose the maximum number of boxes to see on the chart, to only see the last box set this number to 1.
Modified TradingView's Gap indicator for the methods to create and manage the boxes.