- Google Ads API v23_1 release.

- Update Google Ads API v20, v21, and v22 to include EU political advertising changes.
- Add upload_video example.
- Add text guidelines to performance max example.

- Add configurable metadata header for ads api assistant.

- Google Ads API v23_0 release.

- Remove Google Ads API v19.

- Fix issues with async functionality per issue #1045.

- Update GoogleAdsClient.get_services method to expose async service …

…clients.

- Add support for Application Default Credentials (ADC) functionality.

- Add annotations to google/ads/googleads/*.py files.
- Add minor unit test improvements.

Add support for Python 3.14

Upgrade min version of "nox"

Release Google Ads API version 28.1.0

Create version of google-ads-python 28.0.0 that's only compatible with

Python 3.8.