Contains the classes and functions I have coded for my research of manipulating 3D matrices

1. Operations.py contains many different mathematical operations functions which are used in the project.
2. Plot_operations.py contains Classes/functions for plotting of the 3D structure and dose.
3. Sectioning.py contains the segmentation methods for dividing a 3D matrix structure into subsections
4. Transformation.py contains the Torchio transformation for resizing, resampling, and transforming a structure by applying several deformation techniques.