Streaming build logs from the Function Builder

Changelog for v0.2.17:

• PR #34 Add support from streaming build logs from the Function Builder by @welteki

Commits
6fcb167 Add consts for build status by @welteki
a2ef0af Ensure headers are dumped in consistent order by @welteki
7ba7bf0 Support setting SkipPush in build config by @welteki
4ef524d Support streaming build progress by @welteki

Changes: v0.2.16...v0.2.17

Generated by Derek