Continue from Ichimoku AI Trading System -- Part I  
Knowing the limitation of what version 1 can do and adding in those concept that I wanted for the app, enhancement was made and eventually become version 2.  New features for version 2 include having a 3rd option of instead just either perform Long or Short position, it will automatically switch between the two based on requirements or signals were triggered and this is the 3rd option LongShort.  In the metrics showcase, those result from market will be computed so can be used as a comparison of how the strategy perform against the traditional market return (aka buy and hold strategy).  If the strategy can't beat the market performance then it will be useless for this system.  In the backtest result table, position type like Long or Short will be displayed so users can know what type of trade position...