Suggestion: Document the batch ROM testing

[mariomadproductions]

I think some older version were batch tested on full ROM set. So its probably worth documenting the results of that, and eventually adding the test results for the latest release. I could probably make a PR at some point.

[mnadareski]

This would take someone helping test the entire set of known DS and 3DS dumps. It was a very large undertaking back then. If someone does want to do that, then I'll gladly update the comment saying what the numbers are like now.

[mariomadproductions]

Yep, definitely a big undertaking. Although I could probably do DS at some point. If I do, I'll test converting back and forth with both the old version (I'll try and find out what it was exactly) and the current version.