document the new stat.
|@@ -375,6 +375,7 @@ For each queue, the following stats are also reported:|
|- `discarded` - number of items discarded because the queue was too full|
|- `waiters` - number of clients waiting for an item from this queue (using|
|+- `open_transactions` - items read with `/open` but not yet confirmed|
|Kestrel as a library|