Merge topic 'reslice-mapper-direction'

f745710d Add release note for vtkImageResliceMapper updates
1ce55760 Oriented image tests for new vtkImageResliceMapper
5c5ec0ef Fix reslice mapper depth issue for Alpha test
c306fe17 Support image direction in vtkImageResliceMapper
9690a1b5 Fix Direction for vtkImageSliceMapper::SetPoints()

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Reviewed-by: Sankhesh Jhaveri <sankhesh.jhaveri@kitware.com>
Acked-by: Bryce Besler <bryce.besler@gmail.com>
Merge-request: !10280