Updated README.md
Updated README.md + added '--defaults' option
Vision API: latest models and functions
Vision API: latest models and JSON
Start adding new API features
Bug in preset model selection: FIXED
Added missing 'required' parameter to tools
Better multi-language presets + handling newlines
Fixed minor bug for numeric arg opt
New API 2024/01/25 (new models + embed dim param)
A bit of code cleaning
Better model mgmt + updated README.md