Pypulate

- Added feature rich preprocessing methods for Parray.
- Added feature rich statistics methods for Parray
- Added complete test of methods.
- Improved docs.

- Various credit and loan models added.

- Added more pricing models.
- Minor improvements in code and docs.

Added
- New Class for Allocation portfolio
- mean_variance_optimization,
- minimum_variance_portfolio,
- maximum_sharpe_ratio,
- risk_parity_portfolio,
- maximum_diversification_portfolio,
- equal_weight_portfolio,
- market_cap_weight_portfolio,
- hierarchical_risk_parity,
- black_litterman,
- kelly_criterion_optimization

Added
- Initial release