to remember, or even understand, that they should add it themselves.  However,
this change breaks backwards compatibility with the previous serialization
format for assignment_function objects.

they are updated at least once with a detection.

tools.  So this adds the track_association_function and structural_track_association_trainer
objects and also test_track_association_function() and cross_validate_track_association_trainer()
routines.

systems.  This means the wide character input methods won't work on X11
systems.

auto label boxes.  It will also auto-skip empty images when you hold ctrl.

to change the label for a rectangle.

label.

gcc 4.8.

it lets you use a regularizer like ||w-prior||^2 instead of the usual ||w||^2
regularizer.

auto-completion based on ctags, which is annoying.