Update Drawdown Calculation Use OHLC of the Equity Curve

[AlexCatarino]

Expected Behavior

The low and high of the equity curve are part of the drawdown calculation.

Actual Behavior

We use the daily close.

Potential Solution

Use the low and high instead of the close.

Checklist

• [x] I have completely filled out this template
• [x] I have confirmed that this issue exists on the current master branch
• [x] I have confirmed that this is not a duplicate issue by searching issues