Merge topic 'implicit-points-cells-structured-data'

7b0666af Add changelog
5b99d774 vtkContourFilter: Remove ghosts fot vtkImageData if possible
7110dd81 vtkDataSet: Avoid calling local for every cell id
dce93152 vtk*3DLinearGrid*: Support empty cell
c9ccea8a vtkIOSSModel: Simplify using implicit structures
51bc9159 vtkCutter: Use vtkAppendDataSets only with more than 1 contour value
d40d1de8 vtkStructuredDataPlaneCutter: Simplify using implicit structures
4174efe2 vtkStructuredDataPlaneCutter: Remove ghosts after FlyingEdges if possible
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !10037