Critical fix:  Was missing spans at the very beginning of molecules and not getting the full with of those which were gaps in the mpileup were immediately followed by 0-depth
Critical fix:  Was missing spans at the very beginning of molecules and not getting the full with of those which were gaps in the mpileup were immediately followed by 0-depth

jorvis/biocode,jorvis/biocode,jorvis/biocode,jorvis/biocode