v2.1.0

• add MemorySaver to maintain chat history
• add pre-commit
• add CI/CD
• add langfuse for LLM observability

v2.0.0

• langgraph for chatbot flow
• tool calling whether the user input about the document
• dockerfile for container application

v1.0.0

• Streamlit as chat interface
• Anthropic as LLM
• Chroma as Vector DB
• RecursiveCharacterTextSplitter is used to generate chunk
• sentence-transformers/all-mpnet-base-v2 model is used to generate chunk embedding
• ConversationBufferMemory for chat history
• PyPDF as pdf parser