Full Changelog: [v0.3.12...v0.3.13](https://github.com/anthropics/anthropic-sdk-python/compare/v0.3.12...v0.3.13)
Features
* **types:** de-duplicate nested streaming params types ([141](https://github.com/anthropics/anthropic-sdk-python/issues/141)) ([f76f053](https://github.com/anthropics/anthropic-sdk-python/commit/f76f05320df3059d57ed57153f30be3a8d91fddf))
Bug Fixes
* **client:** properly handle optional file params ([142](https://github.com/anthropics/anthropic-sdk-python/issues/142)) ([11196b7](https://github.com/anthropics/anthropic-sdk-python/commit/11196b757c4ef334f8b6db069ecfc6a57c200389))
Chores
* **internal:** add `pydantic.generics` import for compatibility ([135](https://github.com/anthropics/anthropic-sdk-python/issues/135)) ([951446d](https://github.com/anthropics/anthropic-sdk-python/commit/951446dbd48e0e5b674fd988865f3aef60c86720))
* **internal:** minor restructuring ([137](https://github.com/anthropics/anthropic-sdk-python/issues/137)) ([e601206](https://github.com/anthropics/anthropic-sdk-python/commit/e60120670adbc404b06b0fef9e40134929bc7bbd))
* **internal:** minor update ([145](https://github.com/anthropics/anthropic-sdk-python/issues/145)) ([6a505ef](https://github.com/anthropics/anthropic-sdk-python/commit/6a505ef95523b725a8fdcba71faf9719292e5085))
* **internal:** update base client ([143](https://github.com/anthropics/anthropic-sdk-python/issues/143)) ([8e0dca4](https://github.com/anthropics/anthropic-sdk-python/commit/8e0dca4fe290833f2aa8b25d6c80b0154ea2a703))
* **internal:** update lock file ([147](https://github.com/anthropics/anthropic-sdk-python/issues/147)) ([a72b5ca](https://github.com/anthropics/anthropic-sdk-python/commit/a72b5ca4caa8963961d97e5d689393953e00c49b))
* **internal:** update pyright ([149](https://github.com/anthropics/anthropic-sdk-python/issues/149)) ([9661f94](https://github.com/anthropics/anthropic-sdk-python/commit/9661f941ede82f0023c47b0d9c9beacbd5bbb703))
* **internal:** updates ([148](https://github.com/anthropics/anthropic-sdk-python/issues/148)) ([9f7fbbc](https://github.com/anthropics/anthropic-sdk-python/commit/9f7fbbcd36ed2accb3a59275255f84200ab17b66))
Documentation
* **readme:** add link to api.md ([146](https://github.com/anthropics/anthropic-sdk-python/issues/146)) ([1fcb30a](https://github.com/anthropics/anthropic-sdk-python/commit/1fcb30ae85153d4ab34935a86dcaf0d0fc4470e9))
* **readme:** reference pydantic helpers ([138](https://github.com/anthropics/anthropic-sdk-python/issues/138)) ([ccaab99](https://github.com/anthropics/anthropic-sdk-python/commit/ccaab990df18404db636f206575ed0548e9420e9))