Added additional functions to exported namespace.
Merge branch 'master' of https://github.com/FrankD/NetHet
mixglasso.R:
* Use library parallel instead of multicore
* Changed name of mixglasso_path to mixglasso. This is now the main function.
* Changed name of mixglasso to mixglasso_ncomp_fixed
* Changed mixglasso to return list of models for n.comps, best BIC and MMDL.
* Changed mixglasso_ncomp_fixed to make sure return value has class nethetclustering.

mixglasso_test.r:
* Added unit tests for mixglasso function.

simMix.R
* Changed default random generation for Mu to make default clusters more separated.