upgrade breathe to 1.2.0

Change-Id: I557d4d57f82db553226fbf1a2f791cacebe694a2
add documentation for ITKLabelMap

Change-Id: I1d7a1e8c41e55aff9e9dbcd4e6d2414bb99eeec1
Merge "upgrade breathe to 1.2.0"
Merge "add documentation for ITKLabelMap"