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I'm not sure how hard this is, but it'd be great if file attachment were supported.
This would be useful for detailed questions that take hella work to analyze, and a lot of guessing, while really a couple of steps through the debugger would actually make it a 2-5 minute problem to solve. Having the related code files easily available would make it easier to solve this type of question.
There are a host of file hosting services each with their own subscription plans.