Obscure-stats

What's Changed
* Added Gini Mean Difference

What's Changed
* Added Cole Index;
* Added Fisher Index
* Added Wainer and Thissen S*;
* Added Tukey Coscale;
* Code optimizations;
* Small bug fixes;
* A lot of security updates.

- Added Renyi entropy;
- Added McIntosh's D;
- Documentation and Contribution guide actualization;
- Code optimizations and bug fixes.

- New associations measures:
* Rank Minrelation Coefficient;
* Winsorized Correlation Coefficient;
* Blomqvist Beta;
- New skewness measure:
* Cumulative skewness;
- Documentation improvements;
- Tests clean up and clarifications.

- Added L-Skewness;
- Added L-Kurtosis;
- Added Range Coefficient;
- Changed L-CV calculation logic;
- Refactor Chatterjee Xi Correlation and Symmetric Chatterjee Xi Correlation;
- Docs improvements.

What's Changed
* Shamos Estimator by glevv in https://github.com/glevv/obscure_stats/pull/5


**Full Changelog**: https://github.com/glevv/obscure_stats/compare/0.1.5-alpha...0.1.6-alpha