nanshe/wavelet_transform.py: In wavelet_transform, changed doctests to use dtype specification.
nanshe/wavelet_transform.py: In wavelet_transform, changed doctests to use dtype specification.

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