Humap

This new release

1. Refactors verbosity;
2. Updates hierarchical computation algorithm, enabling the method to scale to millions of data points;
3. Changes double to float the C++ representations.

- Supporting for reproducible results
- Bug fixies on pypi

- Bug fixies when transforming hierarchy levels

- Bug fixes when fitting the hierarchy
- Check parameters when fitting or transforming data
- Add tests for HUMAP and UMAP (C++)

Added interface for C++ UMAP implementation

The release version of the HUMAP technique.