changed genotype.genotype_data_set from varchar(32) to varchar(64) to match
the maximum width of values generated by the check (from the genotype data
header, see src/gt_pack.h for definition).
Merge pull request #42 from dozy/genotype_data_set_width_fix

changed genotype.genotype_data_set from varchar(32) to varchar(64) to ma...
Merge pull request #43 from wtsi-npg/devel

release 56.13