Option to run Drall in quiet mode, say, --drall-quiet

[darthsteven]

At the moment, I'm trying to us drall to get a nice list of the sites that it has detected and is going to run commands on, doing something like this:

echo "Listing known unique sites:"
drall exec --drall-no-progress 'echo "* @@ukey"'

and hoping for the output:

Listing known sites:
* www.example.com
* www.something.se

Whereas I actually get:

Listing known sites:
Finished: www.example.com
* www.example.com
Finished: www.something.se
* www.something.se

I was wondering if you'd consider introducing a 'quiet' option to the command, so that I could silence those lines that start with Finished: ?