Irrcac

Fix

- revise the calculation of p-values

Refactor

- **docs**: remove sphinx's build directory
- add more pre-commit hooks
- migrate code style to Black

Feat

- calculate Krippendorff's Alpha.

Fix

- calculations for weighted coefficients.

Refactor

- reformat files.

Fix

- return copy of calculations.

Feat

- add Percent Agreement, Scott's Pi, and Krippendorff's Alpha coefficients.

Fix

- added sphinx-autodoc-typehints dependency.
- path to requirements file
- remove package that causes readthedocs to fail importing project.