Bump version: 3.1 → 3.2

Bump version: 3.0 → 3.1

Bump version: 2.28 → 3.0

Bump version: 2.27 → 2.28

Add test and pypi upload via Github Actions

Since the Azure publish pipeline fell over, let's migrate to just using
github actions natively.

Bump version: 2.25 → 2.26

Bump version: 2.24.2 → 2.25

Bump version: 2.24.1 → 2.24.2

Bump version: 2.24 → 2.24.1

Bump version: 2.23.1 → 2.24