add an option of "latest"

It is suggested to add an option of "latest" in the "data--backtest data settings--end day". If "latest" is selected, the historical data will be automatically updated to the latest data when it is updated. Because the development of the walk forward strategy or other reasons will need to  retest every 1-2 months, especially in the custom projects with a large number of steps, there may be dozens of cases involving modifying the end day, which is a waste of time.

Now there is a reset dates button in this location. The function is similar to what I suggest, but this button needs to be manually clicked. It is suggested that an automatic option can be added in the form of a check box.