Import statistics

I would like to suggest an improvement regarding the Replay Mode functionality.

When performing backtesting in Replay Mode, I typically load only a single trading day or session (e.g., the New York session). As a result, my statistics are reset each time I load a new day, which makes it difficult to track overall performance across multiple sessions.

It would be highly beneficial to have the ability to preserve or import statistics between sessions, allowing for more comprehensive and continuous performance analysis.