What's Changed
* nicer error when hitting recursion error while serializing by samuelcolvin in https://github.com/pydantic/pydantic-core/pull/630
* Add slots to dataclass schema by hramezani in https://github.com/pydantic/pydantic-core/pull/617
* Add hide_input to ValidationError by hramezani in https://github.com/pydantic/pydantic-core/pull/633
* fix for model subclass serialization in unions by samuelcolvin in https://github.com/pydantic/pydantic-core/pull/632
* adding `tools.rs`, add `extract_i64` by samuelcolvin in https://github.com/pydantic/pydantic-core/pull/635
* Use `PyInt` for inequality and multiple of checks by samuelcolvin in https://github.com/pydantic/pydantic-core/pull/634
* Add error messages for json by Kludex in https://github.com/pydantic/pydantic-core/pull/637
New Contributors
* Kludex made their first contribution in https://github.com/pydantic/pydantic-core/pull/637
**Full Changelog**: https://github.com/pydantic/pydantic-core/compare/v0.34.0...v0.35.0