nanshe/misc/neuron_matplotlib_viewer.py: Convert the current image to float type so that it will always be rendered as an intensity image.
nanshe/misc/neuron_matplotlib_viewer.py: Convert the current image to float type so that it will always be rendered as an intensity image.

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