Auto purging old history in SKP

[B-Side]

I was wondering if there could be a button within the edit singers screen with a couple of settings to check off and remove singers.

Options to search through the history I would find helpful would be:

X months since last performance
Less than X total performances
Last date sung = date added (adhering to X months rule to remove someone that has only sang with me 1 time but may have more than X performances)

Maybe this list can be sent to a .csv or .xml file or an alternative option to make a backup of the database before committing to the removal.

If anyone else would find this helpful in keeping your history a little cleaner as I would like, feel free to add suggestions to the arguments list.