important changes in scmproj plugin

[Nicholas Allen]

>
> Yes. You can specify revision directly in project.cfg if you want to 
> stick with it. But perhaps you want just "record" state of the project 
> over time. I'm calling this snapshots, they're half done. I need them 
> very much, I'm just out of free time to catch everything. I'm planning 
> to finish snapshots very soon.
This sounds like the big feature beyond what config-manager does. 
Perhaps you should mention this in the comparison with config-manager....

Nick