this has actually been released for a little while. i don't know why i'm just getting around to posting it when i've known about it awhile. i generally post the things that i want to locate later... and i guess this hadn't bubbled to the top of that list yet. anyway, i was looking for it... so here it is for your information too.
basically it'll show you before and after state changes. you run it before you make a change (like an installation) and then after.