Indicators [1.2.5]

Added Indicators:

• Welles Wilder's Smoothing Average (WWS)
• Weighted moving average (WMA)
• Average Directional Index (ADX)
• Parabolic Stop And Reverse (PSAR)

Fixed:

• ATR corner cases in values calculation
• Circular Buffer forEach method, and forEachRight

Units:

• Circular buffer forEach
• WMA
• ADX

Other:

• Readme and benchmarks update