howeyc further reduced

ledger/file.go

@@ -21,7 +21,9 @@ func (file File) Deltas(like ...Like) ([]Delta, error) {
 	}
 	result := make([]Delta, 0, len(transactions)*2)
 	for _, transaction := range transactions {
-		for _, delta := range newDeltas(transaction) {
+		for _, acc := range transaction.AccountChanges {
+			value, _ := acc.Balance.Float64()
+			delta := newDelta(transaction.Date, acc.Name, value)
 			if !likes(like).all(delta) {
 				continue
 			}