12-18-2018 09:54 PST

- Import `iam.policy` from `google.api_core`. ([#6741](https://github.com/googleapis/google-cloud-python/pull/6741))

- Pick up fixes to GAPIC generator. ([#6510](https://github.com/googleapis/google-cloud-python/pull/6510))

- Fix `client_info` bug, update docstrings. ([#6423](https://github.com/googleapis/google-cloud-python/pull/6423))

- Re-generate library using texttospeech/synth.py ([#5981](https://github.com/googleapis/google-cloud-python/pull/5981))

- Add gRPC Transport layer. ([#5959](https://github.com/googleapis/google-cloud-python/pull/5959))

- Bump minimum `api_core` version for all GAPIC libs to 1.4.1. ([#6391](https://github.com/googleapis/google-cloud-python/pull/6391))

- Avoid broken 'google-common-apis 1.5.4' release. ([#6355](https://github.com/googleapis/google-cloud-python/pull/6355))

- Document Python 2 deprecation ([#6910](https://github.com/googleapis/google-cloud-python/pull/6910))

- Docs: normalize use of support level badges ([#6159](https://github.com/googleapis/google-cloud-python/pull/6159))

- Docs: Replace links to `/stable/` with `/latest/`. ([#5901](https://github.com/googleapis/google-cloud-python/pull/5901))

- Fix docs links for TTS. ([#5483](https://github.com/googleapis/google-cloud-python/pull/5483))

- Add synth.metadata. ([#6870](https://github.com/googleapis/google-cloud-python/pull/6870))

- Update noxfile.

- blacken all gen'd libs ([#6792](https://github.com/googleapis/google-cloud-python/pull/6792))

- omit local deps ([#6701](https://github.com/googleapis/google-cloud-python/pull/6701))

- Run black at end of synth.py ([#6698](https://github.com/googleapis/google-cloud-python/pull/6698))

- Run Black on Generated libraries ([#6666](https://github.com/googleapis/google-cloud-python/pull/6666))

- Add templates for flake8, coveragerc, noxfile, and black. ([#6642](https://github.com/googleapis/google-cloud-python/pull/6642))

- Add 'mock' to unit test dependencies for autogen libs. ([#6402](https://github.com/googleapis/google-cloud-python/pull/6402))

- Add / fix badges for PyPI / versions. ([#6158](https://github.com/googleapis/google-cloud-python/pull/6158))

- Use new Nox ([#6175](https://github.com/googleapis/google-cloud-python/pull/6175))