The strategy focus on volatility. It will open position when the
volatility keep going up (short term ATR > long term ATR).
The position direction depends on the short term price trend
(determined by EMA), then closes opened position when the volatility
trend changed (short term ATR < long term ATR).
Default SL=5 pips; TP= 10 pips.
Works only from 00:00 to 08:00 (GMT+0).