Fetch (and/or print content to stdout) issue attachments

[msva]

Hi there! Thanks for such a pretty useful tool that helps to increase performance in work with JIRA, but it seems like terjira can't fetch files from attachments, and, what will also be useful, print their content to stdout.

I guess, the latter thing can be achieved by something like downloading specified file (from specified issue attachments) to ram or tempfile, and then throw the content in stdout. In that case it can be handled by nothing (text files) or less or vim or whatever, display (imgs), catdoc, and so on.

And for just downloading - I guess, it should be possible to specify download directory (preferrable), or, at least, use XDG dirs

[keepcosmos]

Thanks for suggesting new feature. 👍