Can split passages into sentences. Improved embedding, LLM representation models, improved zero shot capabilities

Updated packages. Improve hierarchy vis. Better models - mixedbread and phi3. Now option to split texts into sentences before modelling.

Upgraded to Gradio 4.16.0. Guide for converting to exe added.

Added clean data options, improved re-representation options and visualisation. General format changes

Lots of general fixes. New visualisations, fixed hierarchical vis for zero shot. Added calc all probabilities.

first commit