BUG: Writing a work around for caudates in images where subjects have huge ventricles.
DEV: BCut candidateRegion Masking
BUG:  Fix passing postierorDictionary to BRAINSCut.
ENH: Instrument to avoid failure if dot is not available for tracking.
BUG: Fixed logic bugs in computing the candidateRegion for Caudate.
ENH:  Update to include Reference Atlas that contains linear caudate trianing models.