File support on forums

Any chance we can get the uploads to allow some sort usable archive? 7z, for example.

Any nontrivial solution to problems here means at best having to paste something into a comment; and for anything involving more than a single file means all we can offer people is "well, I have exactly what you're looking for, but I can't upload it here so, good luck".

Capping filesizes at even just 5MB would remove any risk of people sharing binaries etc.