Plotting utilities

Functions:

plot_utils.slice_viewer(data[, data2, title])	Display slices of one or two 3D image volumes with a consistent grayscale across slices.
plot_utils.display_slices(phantom, sinogram, ...)	Displays slices of phantom, sinogram, and reconstructed image side by side for comparison.
plot_utils.plot_granularity_and_loss(...[, ...])	Plots multiple granularity and loss data sets on a single figure.