get_cmap in Matplotlib is deprecated
I'm seeing the following warnings from PCAfold on the latest python stack:
PCAfold/PCAfold/analysis.py:1376: MatplotlibDeprecationWarning: The get_cmap function was deprecated in Matplotlib 3.7 and will be removed two minor releases later. Use ``matplotlib.colormaps[name]`` or ``matplotlib.colormaps.get_cmap(obj)`` instead.