We're rockin' out the features.
OK, it's not a big feature, but I think it'll get used a lot. We've added a checkbox to the form where transactions get entered titled "This Payment Due Has Been Paid". Checking this box will enter 2 transactions, one for the amount due, and one for the same amount marked as paid.
Paul from White Rock Kenshin Kan asked for this, as he wanted to track all the transactions from his students, not just the amounts that are outstanding. Good idea!