Merge pull request #985 from karlnapf/develop

Fixed ROC unit test
replaced variable-length array with SG_MALLOC in log_det_test_3
example probability for SVM
Merge pull request #986 from lambday/develop

replaced variable-length array with SG_MALLOC in log_det_test_3
Merge pull request #988 from karlnapf/develop

unit test for binary label sigmoid fitting
sample_from_gaussian for sparse cov matrix added
fixed sample_from_gaussian for sparse cov
added SimplicialLLT class in eigen3.h for older eigen
minor changes
example probabilities for SVM
file removed
Added unit-test for Laplacian inference method
examples probabilities for SVM
example probabilities for SVM
files removed
Merge pull request #987 from abinashpanda/develop

example probability for SVM
Merge pull request #993 from votjakovr/develop

Added unit-test for Laplacian inference method
Merge pull request #989 from lambday/develop

sample_from_gaussian for sparse cov matrix added
Travis: run unit tests when building libshogun interface
Fix typo in .travis.yml