Consolidate and rename io_vtk.py functions throughout code base.
Fix read_vtk() and read_scalars().
Fix read_vtk() and read_scalars().
Fix values as numpy array input to mean_value_per_label().
Fix values as numpy array input to mean_value_per_label().
Make norms a numpy array in write_mean_shapes_table()
Make norms a numpy array in write_mean_shapes_table()
Fix extract_fundi() to accept numpy arrays
Fix extract_fundi() to accept numpy arrays
Add arno data to examples. Fix examples and extract_fundi().
Add arno data to examples. Fix examples and extract_fundi().
Fixed through fundus extraction, all all examples except in mesh_operations.py
Fixed through fundus extraction, all all examples except in mesh_operations.py
Test all Examples in all programs.
Test all Examples in all programs.
Update remaining Examples in code documentation
Update remaining Examples in code documentation
Rename mst.py, move connect_points().
Rename mst.py, move connect_points().
Massive reorganization and renaming of folders, files, and functions.

Reorganized in accordance with the conceptual grouping of algorithms / steps of mindboggle:
features, measures, labels, shapes, utils, and evaluate folders.
Functions consolidated, regrouped, and renamed to make more sense throughout code base.
Where numpy arrays are required, inputs are checked and changed accordingly.