Adds `Wishart` and `InverseWishart` distributions#170

Open

egordm wants to merge 11 commits into

statrs-dev:masterfrom

egordm:feature/wishart

Commits on Jul 5, 2022

feat: Added implementation for multivariate gamma function `mvgamma` and its log variant `mvlgamma`
egordm
committed
feat: Added implementation for Wishart distribution
egordm
committed

Commits on Jul 7, 2022

fix: Updated inverse wishart sampling to make the matrix symmetric as pseudo inverse doesn't do this due to approximation
egordm
committed

Commits on Sep 17, 2022

Commits on Sep 19, 2022

fix: Updted inverse wishart to compute chol inverse instead of an approximation
egordm
committed