Release v0.4.0

This release focused on multiple areas:

1. Extending the guardrails interface to support generic events.
2. Adding experimental support for running a red teaming process.
3. Adding experimental support for vicuna-7b-v1.3 and mpt-7b-instruct.
4. Extending Colang 1.0 with support for bot message instructions and using variables inside bot message definitions.
5. Fixing several bugs reported by the community.

Detailed change log below.

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Added

• Event-based API for guardrails.
• Support for message with type "event" in LLMRails.generate_async.
• Support for bot message instructions.
• Support for using variables inside bot message definitions.
• Support for vicuna-7b-v1.3 and mpt-7b-instruct.
• Topical evaluation results for vicuna-7b-v1.3 and mpt-7b-instruct.
• Support to use different models for different LLM tasks.
• Support for red-teaming using challenges.
• Support to disable the Chat UI when running the server using --disable-chat-ui.
• Support for accessing the API request headers in server mode.
• Support to enable CORS settings for the guardrails server.

Changed

• Changed the naming of the internal events to align to the upcoming UMIM spec (Unified Multimodal Interaction Management).
• If there are no user message examples, the bot messages examples lookup is disabled as well.

Fixed

• #58: Fix install on Mac OS 13.
• #55: Fix bug in example causing config.py to crash on computers with no CUDA-enabled GPUs.
• Fixed the model name initialization for LLMs that use the model kwarg.
• Fixed the Cohere prompt templates.
• #55: Fix bug related to LangChain callbacks initialization.
• Fixed generation of "..." on value generation.
• Fixed the parameters type conversion when invoking actions from colang (previously everything was string).
• Fixed model_kwargs property for the WrapperLLM.
• Fixed bug when stop was used inside flows.
• Fixed Chat UI bug when an invalid guardrails configuration was used.