chore: release 1.27.2 (googleapis#236)

🤖 I have created a release \*beep\* \*boop\* 
---
### [1.27.2](https://www.github.com/googleapis/python-bigquery/compare/v1.27.1...v1.27.2) (2020-08-18)


### Bug Fixes

* rationalize platform constraints for 'pyarrow' extra ([googleapis#235](https://www.github.com/googleapis/python-bigquery/issues/235)) ([c9a0567](https://www.github.com/googleapis/python-bigquery/commit/c9a0567f59491b769a9e2fd535430423e39d4fa8))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please).

chore: release 1.27.1 (googleapis#231)

🤖 I have created a release \*beep\* \*boop\* 
---
### [1.27.1](https://www.github.com/googleapis/python-bigquery/compare/v1.27.0...v1.27.1) (2020-08-18)


### Bug Fixes

* tweak pyarrow extra to soothe PyPI ([googleapis#230](https://www.github.com/googleapis/python-bigquery/issues/230)) ([c15efbd](https://www.github.com/googleapis/python-bigquery/commit/c15efbd1ee4488898fc862768eef701443f492f6))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please).

chore: release 1.27.0 (googleapis#210)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

chore: release 1.26.1 (googleapis#179)

* chore: updated CHANGELOG.md [ci skip]

* chore: updated setup.cfg [ci skip]

* chore: updated setup.py

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: Seth Hollyman <[email protected]>

chore: release 1.26.0 (googleapis#130)

* updated CHANGELOG.md [ci skip]

* updated setup.cfg [ci skip]

* updated setup.py

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

chore: release 1.25.0 (googleapis#44)

* updated CHANGELOG.md [ci skip]

* updated setup.cfg [ci skip]

* updated setup.py

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

chore(bigquery): release 1.24.0 (#10322)

chore(bigquery): release 1.23.1 (#9981)

chore(bigquery): release 1.23.0 (#9961)

* chore(bigquery): release 1.23.0

* doc: sentence-case for changelog

* fix: add timeouts to unit tests

chore(bigquery): release 1.22.0 (#9788)