Minivn

What's Changed
* Improvements to saving and loading, add `from_file` method
* Add `get_items` method
* Improvements to CI

**Full Changelog**: https://github.com/aismlv/minivn/compare/v0.1.2...v0.1.3

* Use `` instead of `np.dot` as recommended by [numpy docs](https://numpy.org/doc/stable/reference/generated/numpy.dot.html#numpy-dot)
* Fix a bug in normalising vectors

* Add and delete items in batches

In this release, we're introducing the main features of minivnn:

* Simple and efficient exact nearest neighbor search
* Support for different similarity metrics (dot product and cosine similarity)
* Ability to add, delete, and query embeddings in the index
* Easy saving and loading of index data

Check out the [README.md](https://github.com/your_username/minivnn/blob/main/README.md) for more information