BIOFORMATS: Added Test file and reorganize imports
VCFSTATS: Added initial code for vcf stats
VCFSTATS: Initial code for VCF Stats with some tests
VCFSTATS: Moved allelesCode y Genotype to vcf4 folder
VCFFILTERS: Added initial code to VCFFilters and added some tests
VCFFILTERS: Added guava predicates to method Vcf4Reader
VCFSTATS: Added genotypes to stats
VCFSTATS: Added transitions and transversions to Stats
VCFFILTERS: Rename the class VcfFilter
VCFSTATS: Added ped file to stats. Added provisional ped parser