so they can run each binary trainer on a different core.

by reference since this causes problems if the probabilistic adapter
is saved for later use.  Now it will simply hold the trainer by value.

#include dlib/svm_threaded.h instead of dlib/svm.h to get it now.

online reference.

integer ranges rather than just long ranges.

multiclass decision function object.

between the input and output images.

serialized.

instructions when available.