------------------
- Fix to not strip out Accept/Content-Type headers in builders
[dokai]
- Improve logic to detect a JSON content type
[dokai]
- Use redirected input to pass request payload to httpie
[dokai]
- Fix quoting of non-trivial HTTP headers in builders
[dokai]
- Change to use declarative packaging (setup.cfg instead of setup.py)
[datakurre]