- Moved all uses of PYBIND11_MAKE_OPAQUE to a common header to avoid possilbe ODR violations.
- Added python binding for make_bounding_box_regression_training_data().

of a tensor changed.  I.e. if you ran mini-batches with different sample sizes
you would get an assert triggering.  This has been fixed.

printed to cout or xml.

the scales come from the immediate predecessor and the tensor to be scaled
from the tag.