Strawberry 0.12.0

This releases adds support for ASGI 3.0

from strawberry.asgi import GraphQL
from starlette.applications import Starlette

graphql_app = GraphQL(schema_module.schema, debug=True)

app = Starlette(debug=True)
app.add_route("/graphql", graphql_app)
app.add_websocket_route("/graphql", graphql_app)