Fastapi

* Fix `auto_error=False` handling in `HTTPBearer` security scheme. Do not `raise` when there's an incorrect `Authorization` header if `auto_error=False`. PR [282](https://github.com/tiangolo/fastapi/pull/282).

* Fix type declaration of `HTTPException`. PR [279](https://github.com/tiangolo/fastapi/pull/279).

* Fix broken link in docs about OAuth 2.0 with scopes. PR [275](https://github.com/tiangolo/fastapi/pull/275) by [dmontagu](https://github.com/dmontagu).

* Refactor param extraction using Pydantic `Field`:
* Large refactor, improvement, and simplification of param extraction from *path operations*.
* Fix/add support for list *query parameters* with list defaults. New documentation: [Query parameter list / multiple values with defaults](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#query-parameter-list-multiple-values-with-defaults).
* Add support for enumerations in *path operation* parameters. New documentation: [Path Parameters: Predefined values](https://fastapi.tiangolo.com/tutorial/path-params/#predefined-values).
* Add support for type annotations using `Optional` as in `param: Optional[str] = None`. New documentation: [Optional type declarations](https://fastapi.tiangolo.com/tutorial/query-params/#optional-type-declarations).
* PR [278](https://github.com/tiangolo/fastapi/pull/278).

* Separate error handling for validation errors.
* This will allow developers to customize the exception handlers.
* Document better how to handle exceptions and use error handlers.
* Include `RequestValidationError` and `WebSocketRequestValidationError` (this last one will be useful once [encode/starlette527](https://github.com/encode/starlette/pull/527) or equivalent is merged).
* New documentation about exceptions handlers:
* [Install custom exception handlers](https://fastapi.tiangolo.com/tutorial/handling-errors/#install-custom-exception-handlers).
* [Override the default exception handlers](https://fastapi.tiangolo.com/tutorial/handling-errors/#override-the-default-exception-handlers).
* [Re-use **FastAPI's** exception handlers](https://fastapi.tiangolo.com/tutorial/handling-errors/#re-use-fastapis-exception-handlers).
* PR [273](https://github.com/tiangolo/fastapi/pull/273).

* Fix support for *paths* in *path parameters* without needing explicit `Path(...)`.
* PR [256](https://github.com/tiangolo/fastapi/pull/256).
* Documented in PR [272](https://github.com/tiangolo/fastapi/pull/272) by [wshayes](https://github.com/wshayes).
* New documentation at: [Path Parameters containing paths](https://fastapi.tiangolo.com/tutorial/path-params/#path-parameters-containing-paths).

* Update docs for testing FastAPI. Include using `POST`, sending JSON, testing headers, etc. New documentation: [Testing](https://fastapi.tiangolo.com/tutorial/testing/#testing-extended-example). PR [271](https://github.com/tiangolo/fastapi/pull/271).

* Fix type declaration of `response_model` to allow generic Python types as `List[Model]`. Mainly to fix `mypy` for users. PR [266](https://github.com/tiangolo/fastapi/pull/266).

* Add support for Pydantic's `include`, `exclude`, `by_alias`.
* Update documentation: [Response Model](https://fastapi.tiangolo.com/tutorial/response-model/#response_model_include-and-response_model_exclude).
* Add docs for: [Body - updates](https://fastapi.tiangolo.com/tutorial/body-updates/), using Pydantic's `skip_defaults`.
* Add method consistency tests.
* PR [264](https://github.com/tiangolo/fastapi/pull/264).

* Add `CONTRIBUTING.md` file to GitHub, to help new contributors. PR [255](https://github.com/tiangolo/fastapi/pull/255) by [wshayes](https://github.com/wshayes).

* Add support for Pydantic's `skip_defaults`:
* There's a new *path operation decorator* parameter `response_model_skip_defaults`.
* The name of the parameter will most probably change in a future version to `response_skip_defaults`, `model_skip_defaults` or something similar.
* New [documentation section about using `response_model_skip_defaults`](https://fastapi.tiangolo.com/tutorial/response-model/#response-model-encoding-parameters).
* PR [248](https://github.com/tiangolo/fastapi/pull/248) by [wshayes](https://github.com/wshayes).

* Add support for WebSockets with dependencies and parameters.
* Support included for:
* `Depends`
* `Security`
* `Cookie`
* `Header`
* `Path`
* `Query`
* ...as these are compatible with the WebSockets protocol (e.g. `Body` is not).
* [Updated documentation for WebSockets](https://fastapi.tiangolo.com/tutorial/websockets/).
* PR [178](https://github.com/tiangolo/fastapi/pull/178) by [jekirl](https://github.com/jekirl).

* Upgrade the compatible version of Pydantic to `0.26.0`.
* This includes JSON Schema support for IP address and network objects, bug fixes, and other features.
* PR [247](https://github.com/tiangolo/fastapi/pull/247) by [euri10](https://github.com/euri10).

* Upgrade the compatible version of Starlette to `0.12.0`.
* This includes support for ASGI 3 (the latest version of the standard).
* It's now possible to use [Starlette's `StreamingResponse`](https://www.starlette.io/responses/#streamingresponse) with iterators, like [file-like](https://docs.python.org/3/glossary.html#term-file-like-object) objects (as those returned by `open()`).
* It's now possible to use the low level utility `iterate_in_threadpool` from `starlette.concurrency` (for advanced scenarios).
* PR [243](https://github.com/tiangolo/fastapi/pull/243).

* Add OAuth2 redirect page for Swagger UI. This allows having delegated authentication in the Swagger UI docs. For this to work, you need to add `{your_origin}/docs/oauth2-redirect` to the allowed callbacks in your OAuth2 provider (in Auth0, Facebook, Google, etc).
* For example, during development, it could be `http://localhost:8000/docs/oauth2-redirect`.
* Have in mind that this callback URL is independent of whichever one is used by your frontend. You might also have another callback at `https://yourdomain.com/login/callback`.
* This is only to allow delegated authentication in the API docs with Swagger UI.
* PR [198](https://github.com/tiangolo/fastapi/pull/198) by [steinitzu](https://github.com/steinitzu).

* Make Swagger UI and ReDoc route handlers (*path operations*) be `async` functions instead of lambdas to improve performance. PR [241](https://github.com/tiangolo/fastapi/pull/241) by [Trim21](https://github.com/Trim21).

* Make Swagger UI and ReDoc URLs parameterizable, allowing to host and serve local versions of them and have offline docs. PR [112](https://github.com/tiangolo/fastapi/pull/112) by [euri10](https://github.com/euri10).