added conjugate gradient descent asunc
Merge branch 'devel' into mrd
async optimize working
added sample dataset for BGPLVM Matlab comparison
restructuring and merge with devel
LinearCF Psi Stat not working yet, strange bug in psi computations
correcting linearCF, mu to go
merge devel into mrd > transformations added
Mu to go
Mu to go
added absolute difference check to gradcheck
linear psi2 statistics done, all gradients working
testing updates
added @testing.deepTest property for skipping tests for deep scan only