First pass at making cumulative risk metrics match 1 year period.
Account for shifted columns in answer_key

Answer key had added so more columns for insight in to
the returns.
Update values since metrics have changed.
Use minute data for minute emission data.

Discovered when using [:dt] instead of .valid() to get
the current returns.
Create first day stats.
Handle first day return.
Use mean returns and treasury for sortino calculation.