Lokaltog/powerline — pull request #712 by ZyX-I (2013-11-18 21:04:44+00:00)
Title: Add jobnum segment

Replaces #596. Differences:
- Tests and metavar.
- Uses “jobnum” name in place of “jobs”.
- Does not use subshell for zsh. Also counts jobs correctly in zsh.
- Adds an option to force showing jobnum segment even if there are no jobs.