Basic functionality of spt.bss is back
Class pca works, lots of new tests
Bringing back package spt.criterion
Checkpoint
New feature extractor: topo_ratio
New feature extractors
Docs for psd_ratio feature
Delete criterion psd_ratio
Criterion tfd has become feature tfd
Remove obsolete criterion acf
Criterion qrs_erp becomes feature qrs_erp
Criterion sgini becomes feature sgini
Criterion erp becomes feature erp
Criterion rank becomes criterion threshold
Delete obsolete .matlab_submodules directories
Feature linear_combination, criterion threshold
Property Filter for abstract_spt, dummy criterion
All bss_regr default constructors work
All original functionality is there
checkpoint: ongoing work in bss node