fixes the check_feature_type logic
adds double_igo in featurefunctions.py
defines extract_parametric_features and documents them
fixes regression features in regression/trainer.py
updates regression/base.py
adds doc in regressionfunctions.py
proper check of regression features in sdm/trainer.py
fixes error in checking regression type and features
completes multilevel support for regression_type
adds copy() support to homogeneous.
Merge remote-tracking branch 'upstream/master' into hcopy2
set h_matrix on alignment tests
as_non_alignment method
fixes bug with get_parameters
removes abstract decorator from get_parameters()
fixes printing
more tests for h package
more print improvement
Trilist is optional!
Add tests for trilist case