New features

[lbelzile]

• Univariate distributions:
  • generalized Zipf and discrete generalized Pareto distributions for discrete extremes; see Github repo of A. Hitz for comparison
  • blended GEV distribution
• inhomogeneous Poisson process with orthogonal parametrization
• New estimators of the tail dependence coefficient
• Add seismic activity data, tornado and Palm drought severity index
• add extremogram estimator with block bootstrap
• KL divergence test for equality of multivariate distributions Engelke, Naveau, Zhou
• regression models for GEV, etc. by collapsing inequality constraints (all domain must be positive, so keep minimum)?
• Heffernan-Tawn estimator of extremal dependence

[lbelzile]

Regression model for gev implemented, but this is proving challenging from an optimization perspective. Collapsing the inequality constraints does work.