Exported backup file names

Would it be possible to change how Summit names its backups? Right now they're not "order by name" friendly.

To make them so, they should:

• be prefixed with summit (so it doesn't bundle with backups from other apps that also don't prefix their names)
• use ISO date format (so the month is always before the day)

Especially the last one would be nice. I just did some cleanup and thought my last backup wasn't there as it was not the last one (by name) in the file list.