The fields of the glf format

For a site:

• recordType: uint8_t = 1 for a SNP entry
• offset: uint32_t, basically the position
• maxLL and depth: as one uint32_t, maxLL is in phred and capped at 255
• root mean square of mapping qualities: uint8_t at the moment not calculated, set to 0 for all
• genotypeLL: uint8_t x 10, the 10 normalized phred genotype likelihoods

For a new chromosome:

• recordType: uint8_t = 0 for a chromosome entry
• chromosome name: uint8_t if it's empty, else uint32_t