vcffilter: backup commit, bad SOM now working
vcfcheck: Fixed a bug introduced by recent changed in synced reader
vcf core lib: Added sanity check to catch up common problem makers, such as PL declared as Number=. instead of Number=G; Support for output of more than 64 alternate alleles; API to access bcfinfo_t header line information.
vcfmerge: Fixed subtle bugs revealed when merging FMT fields of different lengths; Append version string and command to the output VCF header
vcffilter: First step towards indel filtering - new switch to select from good sites mask
vcffilter: skip the two additional score fields when applying SOM filters
vcfcheck: create additional ts/tv stats which counts 1st alternate allele only