chore: release 1.2.0 (#51)

🤖 I have created a release \*beep\* \*boop\*
---
## [1.2.0](https://www.github.com/googleapis/python-billing/compare/v1.1.1...v1.2.0) (2021-05-28)


### Features

* add from_service_account_info factory and fix sphinx identifiers ([#42](https://www.github.com/googleapis/python-billing/issues/42)) ([95ba269](https://www.github.com/googleapis/python-billing/commit/95ba26961090dc76e75064cba10c21ca4897675e))
* support self-signed JWT flow for service accounts ([a2a6aaf](https://www.github.com/googleapis/python-billing/commit/a2a6aaf71864cd1a9e093fd77f6426e2a39ebe25))


### Bug Fixes

* add async client to %name_%version/init.py ([a2a6aaf](https://www.github.com/googleapis/python-billing/commit/a2a6aaf71864cd1a9e093fd77f6426e2a39ebe25))
* **deps:** add packaging requirement ([#75](https://www.github.com/googleapis/python-billing/issues/75)) ([73d8957](https://www.github.com/googleapis/python-billing/commit/73d895725d396d7f930c8259dfbec269897a5b62))
---


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

Author: release-please[bot]

packages/google-cloud-billing/CHANGELOG.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## [1.2.0](https://www.github.com/googleapis/python-billing/compare/v1.1.1...v1.2.0) (2021-05-28)
+
+
+### Features
+
+* add from_service_account_info factory and fix sphinx identifiers ([#42](https://www.github.com/googleapis/python-billing/issues/42)) ([95ba269](https://www.github.com/googleapis/python-billing/commit/95ba26961090dc76e75064cba10c21ca4897675e))
+* support self-signed JWT flow for service accounts ([a2a6aaf](https://www.github.com/googleapis/python-billing/commit/a2a6aaf71864cd1a9e093fd77f6426e2a39ebe25))
+
+
+### Bug Fixes
+
+* add async client to %name_%version/init.py ([a2a6aaf](https://www.github.com/googleapis/python-billing/commit/a2a6aaf71864cd1a9e093fd77f6426e2a39ebe25))
+* **deps:** add packaging requirement ([#75](https://www.github.com/googleapis/python-billing/issues/75)) ([73d8957](https://www.github.com/googleapis/python-billing/commit/73d895725d396d7f930c8259dfbec269897a5b62))
+
 ### [1.1.1](https://www.github.com/googleapis/python-billing/compare/v1.1.0...v1.1.1) (2021-02-11)
 
 

packages/google-cloud-billing/setup.py

@@ -19,7 +19,7 @@
 import os
 import setuptools  # type: ignore
 
-version = "1.1.1"
+version = "1.2.0"
 
 package_root = os.path.abspath(os.path.dirname(__file__))