alan-turing-institute/distr6: distr6 1.4.4

Added coercions from Vector/Mixture/ProductDistribution to Mixture/ProductDistribution via as.MixtureDistribution and as.ProductDistribution Bugfix in MixtureDistribution parameter set Uneven vectors of WeightedDiscrete distributions are now truncated at the minimum length in the vector for pdf, cdf, quantile CoreStatistics methods now give the option to use cubature::cubintegrate and all associated parameters. Remove {pracma} requirement in ExoticStatistic