the dlib GUI was used.

geometry components use the optimization tools.

from the non-negative feature learning range.  This change fixes that.

should help catch the case where a user changes the feature extractor and then
tries to load an old model.

to make the overall rectangle API more uniform.

a user to read the state of these objects.

objects.

outputs sometimes.

reasonable.

format for sequence_segmenter objects.

and cross_validate_sequence_segmenter()