ENH: Add more operations to ants.ImageMath

These added operations are necessary for the antsBrainExtraction workflow we have in niworkflows (and hence niflows too).

Author: oesteban

nipype/interfaces/ants/utils.py

@@ -47,6 +47,10 @@ class ImageMathInputSpec(ANTSCommandInputSpec):
         "GO",
         "GC",
         "TruncateImageIntensity",
+        "Laplacian",
+        "GetLargestComponent",
+        "FillHoles",
+        "PadImage",
         mandatory=True,
         position=3,
         argstr="%s",