update ShutterCrop
more modular DeformableLine
update DragableCmap
add test_img to data submod
remove stray print
remove creation_callback
DraggableCmap requires axis in constructor
whitespace
unused import
in-progress script
move yoink_cmap
remove unused classes
introduce if_attentive
everything is a Widget
rename create()
 DragableCmap active and visible
drop (dis)connect in favor of testing if_attentive
_make_rects
move get_extents
bury pyplot