Support for geostatistical analysis of multivariate data,
in particular data with restrictions, e.g. positive amounts data,
compositional data, distributional data, microstructural data, etc.
It includes descriptive analysis and modelling for such data, both
from a two-point Gaussian perspective and multipoint perspective.
The methods mainly follow Tolosana-Delgado, Mueller and van den
Boogaart (2018)