v2.4.0

Features

• add context manager support in client (d6c8868)
• add methods for creating and deleting composite indexes (#248) (d6c8868)
• add support for self-signed JWT flow for service accounts (d6c8868)

Bug Fixes

• add 'dict' annotation type to 'request' (d6c8868)
• export async client from 'google/cloud/datastore_v1' (d6c8868)
• deps: require google-api-core >= 1.28.0 (d6c8868)

Documentation

• list 'oneofs' in docstrings for message classes (d6c8868)