Developer guide needs adjustments
to account for
- Conda recipes
- Don't mention conda-forge
- How to test packages locally, including conda-build or buildout-based setups
- Needs fixing: https://www.idiap.ch/software/bob/docs/bob/bob.extension/master/additional.html#continuous-integration-ci
- New bob-devel package which does not install anything by default
- Merge the "developing existing packages" guide into bob.buildout bob.buildout!29 (comment 26098)