==================
- :confval:`programoutput_prompt_template` is interpreted as format string now!
- Require Python 2.6 now
- Added ``returncode`` option to :rst:dir:`program-output` (thanks to Jan-Marek
Glogowski)
- Support ``returncode`` formatting key in
:confval:`programoutput_prompt_template`
- Warn on unexpected return codes instead of raising
:py:exc:`~subprocess.CalledProcessError`
- Turn fatal errors during command into document error messages instead of
crashing the build