how can add target="_blank" to markdown links
[test](http://test.com)in github?!
Original: https://github.com/mojombo/github-flavored-markdown/issues/28
:wave: Please reach out to our support team with your feature request — this repository is just for issues for the github-markup gem, which doesn't actually perform Markdown transformation; it just selects a library. We don't support this at all right now, so by directing this to the support team, it helps keep track of feature requests and how many people are asking for them. Thanks!
OPEN THIS, AND FIX IT PLEASE.