First, thanks a lot for this wonderful crate. It is awesome to use!

I have a minor issue, I have a workload with highly changing operation rates (in bytes per seconds) which is kind of desired behavior as sometimes caching is used and sometimes not. Now, displaying ETA and bytes_per_second works but is of course very oscillating.
Is it possible to add an option which allows to smooth these value, e.g. that a longer time period is used for the calculation?