Longer backtesting period#75

The 30 days limit is way to short to confidently know the profitability of a certain strategy over a long period of time. Especially with future trading which might involve leverages. We need to know how the strategy react to different degree of price movements.

or at least allow a date range beyond the past 30 days.

Some of us run very long term grid bots, from months to years.

It would be really beneficial if backtest period can be extended longer beyond 30 days, eg. months.

Attached is my 2 yr BTC-USDT and I intend to keep this for years.

I realise that longer backtest periods use more resources so maybe make it part of the diff subscriptions (Similar to TradingView). So for Pro give 2 years whereas Free only 30 days etc