Lexrpc

Notable changes

* Drop `typing-extensions` version pin now that [typing-validation has been updated to be compatible with it](https://github.com/hashberg-io/typing-validation/issues/1).
* Update bundled `app.bsky` and `com.atproto` lexicons, as of [bluesky-social/atprotof45eef3](https://github.com/bluesky-social/atproto/commit/f45eef3414f8827ba3a6958a7040c7e38bfd6282).

Notable changes

* `Client`:
* Support binary request data automatically based on input type, eg `dict` vs `bytes`.
* Add new `headers` kwarg to `call` and auto-generated lexicon method calls, useful for providing an explicit `Content-Type` when sending binary data.
* Bug fix: don't infinite loop if `refreshSession` fails.
* Other minor authentication bug fixes.

Notable changes

* Bundle [the official lexicons](https://github.com/bluesky-social/atproto/tree/main/lexicons/) for `app.bsky` and `com.atproto`, use them by default.
* `Base`:
* Expose lexicons in `defs` attribute.
* `Client`:
* Add minimal auth support with `access_token` and `refresh_token` constructor kwargs and `session` attribute. If you use a `Client` to call `com.atproto.server.createSession` or `com.atproto.server.refreshSession`, the returned tokens will be automatically stored and used in future requests.
* Bug fix: handle trailing slash on server address, eg `http://ser.ver/` vs `http://ser.ver`.
* Default server address to official `https://bsky.social` PDS.
* Add default `User-Agent: lexrpc (https://lexrpc.readthedocs.io/)` request header.
* `Server`:
* Add new `Redirect` class. Handlers can raise this to indicate that the web server should serve an HTTP redirect. [Whether this is official supported by the XRPC spec is still TBD.](https://github.com/bluesky-social/atproto/discussions/1228)
* `flask_server`:
* Return HTTP 405 error on HTTP requests to subscription (websocket) XRPCs.
* Support the new `Redirect` exception.
* Add the `error` field to the JSON response bodies for most error responses.

Notable changes

* Add array type support.
* Add support for non-JSON input and output encodings.
* Add `subscription` method type support over websockets.
* Add `headers` kwarg to `Client` constructor.
* Add new `Server.register` method for manually registering handlers.
* Bug fix for server `method` decorator.

Bluesky's Lexicon design and schema handling is still actively changing, so this is an interim release. It generally supports the current lexicon design, but not full schema validation yet. I'm not yet trying to fast follow the changes too closely; as they settle down and stabilize, I'll put more effort into matching and fully implementing them. Stay tuned!

_Breaking changes:_

* Fully migrate to [new lexicon format](https://github.com/snarfed/atproto/commit/63b9873bb1699b6bce54e7a8d3db2fcbd2cfc5ab). Original format is no longer supported.

Initial release!

Tested interoperability with the `lexicon`, `xprc`, and `xrpc-server` packages in [bluesky-social/atproto](https://github.com/bluesky-social/atproto). Lexicon and XRPC themselves are still very early and under active development; caveat hacker!