What's Changed
* Fix Langchain Integration when using No-Op by CalebCourier in https://github.com/guardrails-ai/guardrails/pull/980
* Fix Behaviour when LLM is None by CalebCourier in https://github.com/guardrails-ai/guardrails/pull/983
* prompt, instructions, msg_history deprecations, messages RAIL support by dtam in https://github.com/guardrails-ai/guardrails/pull/847
* Validator Concept Doc by CalebCourier in https://github.com/guardrails-ai/guardrails/pull/981
* Add Databricks to Using LLMs doc by CalebCourier in https://github.com/guardrails-ai/guardrails/pull/990
* In Code Hub Installs by AlejandroEsquivel in https://github.com/guardrails-ai/guardrails/pull/951
* auto label and close stale prs and issues by dtam in https://github.com/guardrails-ai/guardrails/pull/991
* adds custom validator cookbook and updates validator concept doc by dtam in https://github.com/guardrails-ai/guardrails/pull/987
* add support for specifying a template in cli create by dtam in https://github.com/guardrails-ai/guardrails/pull/952
* Default Validator Hub Service URL to point to Cloudfront Distribution by AlejandroEsquivel in https://github.com/guardrails-ai/guardrails/pull/993
* bump to 0.5.3 by zsimjee in https://github.com/guardrails-ai/guardrails/pull/994
**Full Changelog**: https://github.com/guardrails-ai/guardrails/compare/v0.5.2...v0.5.3