Logging and test

• Added logging
• Added test to most parts of the package
• Added possibility to change representation of unobserved allele when splitting variants

VCF 4.2

• Splits fields with R flag in a proper way

Added CLI

Command Line Interface:

vcf_parser examples/test_vcf.vcf --split

Prints a new vcf with splitted variants to screen. For more info:
vcf_parser examples/test_vcf.vcf --help

• Parses AD correct in genotype call when splitting multialleles

Split Multialleleic Calls

• vcf_parser can split multi allelic calls, both the genotypes and the INFO fields (including the VEP CSQ entry)