Catch failing cholesky
Extract code common to both cases
Avoid one temporary variable

A drop of water in an ocean of allocations...
Make state accessible for the adventurous

It will actually be needed until I fix
the problem with torch.manualSeed() not resetting
the whole state of randomkit, especially the
gaussian part.
Accept rank-defficient covariance matrix
Document it
Merge pull request #19 from jucor/mvn

Support marginals with 0 variance in multivariate Gaussian