No SNPs displayed when sequence is from 'b' tag

[cmdcolin]

This is a follow up from the previous issue of #34

Currently when large blocks of sequence are loaded from 'b', we don't have SNPs in this file. I don't know if we need to manually compare it with a seqFetch to see if SNPs exist?

[cmdcolin]

Possibly this is a 'samtools calmd' analog in CRAM form too. We will follow up in email with sacha

[cmdcolin]

Ref here https://sourceforge.net/p/samtools/mailman/message/36681818/

Apparently samtools can resolve SNPs between this and a refseq from what I can tell, creating both a MD and CIGAR string from samtools view file.cram