In the Coverage... tab, you have the ability to only
select ALL source folders, or none at all.
I would like to run coverage on X tests, for which I am
only concerned with coverage on a specify working set -
or even package.
Since there are 8,000 classes, and I'm interested in
coverage on 500 of them, being able to set at Working
Set or package level what classes to instrument would
make using this plugin much faster