Merged in single diffusion code + small fixes.

Signed-off-by: Julian de Ruiter <julianderuiter@gmail.com>
Removed redundant metabric hist code.

Signed-off-by: Julian de Ruiter <julianderuiter@gmail.com>
Added example script for the artificial dataset.

Signed-off-by: Julian de Ruiter <julianderuiter@gmail.com>
Added example network of the artificial network.

Signed-off-by: Julian de Ruiter <julianderuiter@gmail.com>