Updating transformations notebook.
Updating transformations notebook.

Adding BSpline initialization using coefficient images instead of
setting the spatial domain and control point parameters one by one.

Added cell illustrating how BSplineTransform is inverted via a
deformation field.

Updating code and documentation to show BSpline parameter order

InsightSoftwareConsortium/SimpleITK-Notebooks,zivy/SimpleITK-Notebooks,InsightSoftwareConsortium/SimpleITK-Notebooks,zivy/SimpleITK-Notebooks,zivy/SimpleITK-Notebooks,InsightSoftwareConsortium/SimpleITK-Notebooks