stored_parameters -> parameters
grounding: accept segments as argument
various screwups. merge
new guess_line functions. use them on segmentation
ContourSegmenter: display contours
UserGrounder improvements. load from file, extra keys, extra classes
new _guess_lines
new segmentation_aux.guess_sgments_lines, use it on NearLineFilter
_guess_lines retouching
processor bug: try..catch was obfuscating exceptions inside
LineFinder processor, instead of ad-hoc functions. change filter stack initialization.
better cluster evaluation on _guess_lines. line middles and inters
SegmentOrdererFromLines
ContrastProcessor bugs
split most of _guess_lines into a new clustering module
delete old unneeded method
move region_from_segment to segmentation_aux
opencv ResizeProcessor
remove legacy code on Filter.display
SegmentSplitter