v.2.0.0

1. Added multiple models providers

   • Amazon Bedrock (currently in preview)
   • Amazon SageMaker self hosted models from Foundation, Jumpstart and HuggingFace.
   • External providers via API such as AI21 Labs, Cohere, OpenAI, etc. See available langchain integrations for a comprehensive list.

2. Adding Multiple RAG sources

   • Amazon Aurora with pgvector
   • Amazon OpenSearch VectorSearch
   • Amazon Kendra

3. Replace Lambda Streaming with API Gateway Websockets API

4. Use CDK Constructs instead of NestedStack.

5. Use AWS Cloudscape Design System for user interface.

6. Model Interface logic all in Python.

7. More seamless integration with Langchain framework