Add test for multivariateGaussian with result

This was just a quick test to catch the error that bit me
and prompted to open issue #23
First stage of automating test generation for mvn
Add tests for N-mean call
Tests for multiple covariance matrices
Fix for inferring dimensionality
Reenable tests, simplify test logic, and reduce assert count
Version with multiple covariance matrices working
Fix wrongly named test table
Standardise confidence threshold and use bonferroni correction
Remove unwanted seeding and degenerate check
Simplify test logic
Rename tests
Serialize test properly

... and of course add tests for saving and loading state :)
Temporary diagnostics
Merge pull request #25 from jucor/saveState

Return a RNG state that can be saved to file
Merge branch 'master' into mvnTests_diagnostic
Use Sidak correction instead of Bonferroni

Removed diagnostic code
Tidy chi2 test code
Remove diagnostic file
Add second half of statistical test for gaussian