Need to see output as streamed from runAsync, not only once per line

The current runAsync doesn't allow me to see the live output of a running task.

The docs say:

```
/// If [quiet] is false, [log]s the stdout as line breaks are encountered.
/// The stderr is always logged.
```

I'd really instead like to simply pipe stdout from the Process to the console's stdout.

In my example, I am writing `.` when something happens... I'm not writing newlines.