Progress bar

[hollisticated-horse]

Hi, wonderfull script !

A fantastic feature would be showing some sort of progress bar for easy estimate of operations.
This could go hand in hand with efficient logging ( I've had a hard time reading logs to see which files had issues such as corruption).

progressbar2 seems a worthy stable way of doing this ? I don't know how doable this would be.
I might have a look and make a PR if I get this working.