Down to merge this if you've tested it! Just change it to Ready for Review when you're ready :)

I've been testing it and I'm actually having trouble verifying that this works. I thought it was working when I opened this PR, but it seems I was wrong. For my test case, the title isn't correct if the title extractor is the only enabled extractor. It is correct when wget is enabled, so the cookie file is being read correctly by ArchiveBox, but my fix here doesn't seem to be working. Not sure where it's failing yet.

After throwing some stuff at the wall, I got to a solution that works for me. For some reason, the cookie file only seems to work with requests when I set each cookie one by one, like

        for cookie in cookie_jar:
            session.cookies.set(cookie.name, cookie.value, domain=cookie.domain, path=cookie.path)

It didn't work for me when I tried session.cookies = cookie_jar or session.cookies.update(cookie_jar), and from the docs I can't tell why. If anyone could tell me what I'm missing, I'd appreciate it.