0.5.0 - Triumph of text (docs, better prompting, etc.)

Added

• llm_helper.debug_model_manager—a way to extract raw prompt & schema/tool-call info for debugging of underlying LLM behavior
• docs beyond the README (doc folder)
• test cases
• demo/algebra_tutor.py
• demo/blind_obedience.py

Changed

• use of logger rather than trace boolean, throughout
• further code modularizarion and reorg
• improvements to default prompting
• more elegant handling of install from an unsupported OS

Fixed

• handling of multi-trip scenarios