Update content in 'What Are Agents Anyway?' (#38)

Add comprehensive AI evaluation research table for 2025

Update RAG research table with 7 new papers from March-October 2025

Adding n8n in low-code / no-code tool section (#36)

Include Oumi in low-code / no-code tool section (#31)

Update part1_what_are_ai_agents_anyway.md

Update Agentic AI Crash Course README with comprehensive improvements

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