SequenceDiversity: initialize index when iterating over samples.
SequenceDiversity: initialize index when iterating over samples.

vcflib/vcflib,vcflib/vcflib,ekg/vcflib,ekg/vcflib,vcflib/vcflib,ekg/vcflib,vcflib/vcflib,vcflib/vcflib,vcflib/vcflib,ekg/vcflib,ekg/vcflib,vcflib/vcflib,vcflib/vcflib