Updated the CRC32 values to add leading zeroes where they were missing - thanks to `nummacway` for pointing this out! Closes#15.
Also took the opportunity to take out the "game may not load" part of the corrupt thumbnail messages, as it turns out the SF2000's loader works around thumbnail issues.
Decided to do a bit of digging into the ROMs with corrupt thumbnails, to see if I could determine it programmatically; turns out yup, they all have thumbnail data that's longer than the 59,904 bytes the format allows for. Updated my WQW-scanning code to find the first offset, and now I flag any ROMs whose thumbnail data is too long.
This change also let me fix up and match a few more ROMs where the WQW zip file is actually fine, but is just at the wrong place in the file.
Turns out the SF2000's NES ROMs contain an "iNES" header, which No-Intro doesn't like; stripped the header now, and compared against the "headerless" DAT - thanks to `osaka#9664` for the tip!
