21e886be change commit string to 8.1
48d2d219 Deprecate everything that touches vtkHyperOctree.
24ebec5b Deprecate vtkHyperOctreeFractalSource.

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !3689