This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/5da1d2aa-a963-44d1-952a-3ed428de6719/targets

- [ ] To automatically regenerate this PR, check this box.

Source-Link: googleapis/synthtool@27f4406
Source-Link: googleapis/synthtool@dba48bb
Source-Link: googleapis/synthtool@257fda1
Source-Link: googleapis/synthtool@ffcee79
Source-Link: googleapis/synthtool@d302f93

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/5da1d2aa-a963-44d1-952a-3ed428de6719/targets

- [ ] To automatically regenerate this PR, check this box.

PiperOrigin-RevId: 327026955
Source-Link: googleapis/googleapis@0dc0a6c

* Remove BQ Storage v1beta1 compatibility code

* Adjust code to new BQ Storage 2.0

* Remove Python 2/3 compatibility code

* Bump test coverage to 100%

* Update supported Python versions in README

* Add UPGRADING guide.

* Regenerate bigquery_v2 code with microgenerator

* Adjust hand-written unit tests to regened BQ v2

* Adjust samples to BQ v2 regenerated code

* Adjust system tests to regenerated BQ v2

* Skip failing generated unit test

The assertion seems to fail for a banal reason, i.e. an extra newline
in the string representation.

* Delete Kokoro config for Python 2.7

* Fix docs build

* Undelete failing test, but mark as skipped

* Fix namespace name in docstrings and comments

* Define minimum dependency versions for Python 3.6

* Exclude autogenerated docs from docs index

* Exclude generated services from the library

There are currently no public API endpoints for the ModelServiceClient,
thus there is no point in generating that code in the first place.

* Bump minumum proto-plus version to 1.10.0

The old pin (1.4.0) does not work, tests detected some problem.

* Include generated types in the docs and rebuild

* Ignore skipped test in coverage check

* Explain moved enums in UPGRADING guide

This pull request was generated using releasetool.