ENH: test for controlling spread of the feature points

Change-Id: I9895d46e2080cacd78bbaff42f90d98e1aad3682
ENH: wrapping itkMaskFeaturePointSelectionFilter itkBlockMatchingImageFilter

Change-Id: I45d9b067c47f5a148049adec00806de1102b0dc1
Merge remote branch 'remotes/github/pythonwrapping' into local_dev
Merge remote branch 'remotes/github/featureselection' into local_dev
Merge remote branch 'remotes/github/dev' into local_dev