tests/test_nanshe_learner.py: Added a test for nanshe.nanshe_learner.generate_neurons_blocks with blocks using 3D data.
tests/test_nanshe_learner.py: Added a test for nanshe.nanshe_learner.generate_neurons_blocks with blocks using 3D data.

nanshe-org/nanshe,DudLab/nanshe,jakirkham/nanshe,DudLab/nanshe,nanshe-org/nanshe,jakirkham/nanshe