tests/test_advanced_image_processing.py: Add tests for single precision dictionary learning in addition to the double precision ones.
tests/test_advanced_image_processing.py: Add tests for single precision dictionary learning in addition to the double precision ones.

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