Major release with to `rgpt` general wrapper

• general wrapper function for all GPT models + embeddings
• updated defaults to most recent
• included seed for reproducibility
• minor updates

New release with general wrapper for all GPT models

• general wrapper function for recent GPT models (i.e., 3.5 and 4) with new function rgpt(...)
• seed control for reproducibility
• updated embeddings function with rgpt_embeddings(...)

Full package incl. ChatGPT support

• added support for basic ChatGPT interaction

version v.0.3

• full working version for release

Release for JOSS submission

• updated function names to align better with Open AI API
• prepared submission to JOSS

Complete release for requests and embeddings

Complete and tested for: requests and embeddings

• full documentation
• demo examples

Working release

• full documentation for core functions
• full working functionality for requests and embeddings