nanshe/nanshe_learner.py: Added a logging message for how many neurons were found in the data.
nanshe/expanded_numpy.py: Added the function symmetric_line_filter, which creates a bool array of a give size and given number of dimensions with a line along one dimension.
nanshe/expanded_numpy.py: Added the function line_filter, which is more general than symmetric_line_filter in that it allows non-matching lengths for different dimensions.
nanshe/advanced_image_processing.py: Removed approximate median filter technique for an actual median filter.