Add a single place to collect program control options for the various python scripts that make up the PICS3D system.
Remove an outdated file.
Move all options into the newly-created Options.py.
Minor comment updates.
Add a function to compute the angle between two vectors using the dot product and cos-1.
Fix a bug wherein PelvicPoints wasn't properly heeding the colorization strategy option.
Add a utility function to convert radians to degrees.
Main proc cleanup.
Add a spot to store the amount of corrective rotation we used to translate raw radiographic data into corrected PICS3D data.
Add a calculation of corrective rotation information.