Feature request: ability to whitelist specific items that are getting vendored because of the selected rules but don't exactly match.

I found out the addon was vending my Unstable Elementium materials, purple quality, when I wouldn't expected it leave that alone. Had to open a GM ticket to get the items back from the vendor after I couldn't find them in my bags.

Would be nice to be able to whitelist specific items so they never get vendored.