chore: release 1.27.2 (#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 ([#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).

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-cloud-bigquery/#history
 
+### [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 ([#235](https://www.github.com/googleapis/python-bigquery/issues/235)) ([c9a0567](https://www.github.com/googleapis/python-bigquery/commit/c9a0567f59491b769a9e2fd535430423e39d4fa8))
+
 ### [1.27.1](https://www.github.com/googleapis/python-bigquery/compare/v1.27.0...v1.27.1) (2020-08-18)
 
 

setup.py

@@ -22,7 +22,7 @@
 
 name = "google-cloud-bigquery"
 description = "Google BigQuery API client library"
-version = "1.27.1"
+version = "1.27.2"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'