This script is based on the lazybears wavetrend script
with a extra useful ema
the third ema is based on the last 200 periods and show how the trend is going in the time
- When the original wave cross the third ema it's means that we can continue long or short
- When the third ema stretchs below or up the 0 line it means that the current pair is oversell or overbought but in a large period of time so we can decide if we continue long or short