3.0.0

• XForwardedMiddleware no longer sets forwaded_proto in the request state and instead directly updates the request scope so that subsequent handlers and middleware believe the request scheme is that given by an X-Forwarded-Proto header. This fixes the scheme returned by other request methods and attributes such as url_for in cases where the service is behind an ingress that terminates TLS.
• Add new FastAPI dependencies auth_dependency and auth_logger_dependency from the safir.dependencies.gafaelfawr module. auth_dependency returns the username of the user authenticated via Gafaelfawr (pulled from the X-Auth-Request-User header. auth_logger_dependency returns the same logger as logger_dependency but with the user parameter bound to the username from auth_dependency.
• Add utility functions to initialize a database and create a sync or async session. The session creation functions optionally support a health check to ensure the database schema has been initialized.
• Add new FastAPI dependency db_session_dependency that creates a task-local async SQLAlchemy session.
• Add utility functions datetime_from_db and datetime_to_db to convert between timezone-naive UTC datetimes stored in a database and timezone-aware UTC datetimes used elsewhere in a program.
• Add a run_with_async decorator that runs the decorated async function synchronously. This is primarily useful for decorating Click command functions (for a command-line interface) that need to make async calls.