Don't use CallData.__dict__ due to pyvcf inconsistency.
Don't use CallData.__dict__ due to pyvcf inconsistency.

woodymit/millstone,woodymit/millstone_accidental_source,woodymit/millstone_accidental_source,woodymit/millstone,churchlab/millstone,woodymit/millstone,churchlab/millstone,woodymit/millstone,churchlab/millstone,churchlab/millstone,woodymit/millstone_accidental_source,woodymit/millstone_accidental_source