added sample_from_gaussian for dense matrices
Merge branch 'test' into feature/sample_gaussian_dense
Merge branch 'feature/sample_gaussian_dense' into develop
removed new, produces memory leak
removed new, produces memory leak
fixed memory leak in sample_from_gaussian
added descriptive doxygen comments for sample_from_gaussian
added precision_matrix in sample_from_gaussian
added a different test case for precision_matrix
modified the unit test for sample_from_gaussian
fixed precision_matrix case in sample_from_gaussian
memory leak detected in previous unit-test
memory leak detected in previous unit-test
Merge pull request #971 from lambday/develop

sampling Gaussian with dense covariance matrix