- Added new OpenAI model released on 2024-01-25: `gpt-4-0125-preview`
- Added ability to add custom offline data loaders for Llama-index
- Improved debugging and logging, added debug levels, and introduced a new section `Debugging and Logging` in the documentation
- Moved inline styles to external CSS classes
- Renamed `pygpt_net.provider.llm` to `pygpt_net.provider.llms`