Arcee-py

What's Changed
- Addition of model merging features
- Addition of model weights download features
- SFT QA Set upload enhancements
- Python packaging, CI, and test enhancements
- Documentation fixes

**Full Changelog**: https://github.com/arcee-ai/arcee-python/compare/1.0.3...1.2.0

triple layer feature complete

Release new build

This release includes the following methods

Data Upload:

* corpus upload
* Q+A pairs
* docs

We perform:

* CPT
* SFT
* Retrieval

We infer:

* generation
* retrieval
* embeddings

Unlocks demo models in langchain

Includes fixt to the pydantic bug witnessed in Colab and elsewhere