Show Balance in the reports.

Right now the reports sperate income and expenses. I'm using the app as a reimbursement tracker. So it would be nice to see the balance between me and my employee at each transaction.

For example he spends some money on supplies and the balance is negative -100 (indicating that he spent his own money) I reimburse him 500 the balance then shows 400 (indicating he has 400 to spend on supplies before I need to send more money)

Right now I can see the current balance which is useful but it would be nice to be able to reconcile balances at different points in time.