don't increment reference position if CIGAR event is a softclip.
don't increment reference position if CIGAR event is a softclip.

EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller