Print out the image hash for easier debugging (can look up the custom data ourselves to check it), and also fix a bug with retries not carrying `contextString` through, oops!
It seems to be working!! How exciting!! I'm just letting it run on stuff now :3
One important issue is that Classic DTI doesn't show images for items modeled this way, because we don't download the SWFs for it. But I wanna update it to stop using AWS anyway and do the same stuff 2020 does, I think we can do that pretty sneakily!
