wae(sensitivity, macdFastEMALength, macdSlowEMALength, bbChannelLength, bbStdevMultiplier, refHigh, refLow, refClose) Returns the Waddah Attar Uptrend, Downtrend, Explosion Line and Dead zone Parameters: sensitivity: simple float multiplicator for trend line calculation from macd macdFastEMALength: simple int length for macd fast line macdSlowEMALength: simple int length for macd slow line bbChannelLength: simple int length for calculating the bb channel (for std deviation) bbStdevMultiplier: simple float multiplier to increace bb std deviation refHigh: series float optional if you want to use another timeframe or symbol, pass it's 'high' series here refLow: series float optional if you want to use another timeframe or symbol, pass it's 'low' series here refClose: series float optional if you want to use another timeframe or symbol, pass it's 'close' series here Returns: [series float trendUp, series float trendDown, series float explosion, series float deadzone]