Merge pull request #18 from erwinwinder/master

Fix iterator bug
Small refactor
Moved Plink utils from molgenis to molgenis-genotype-reader
Merge pull request #19 from joerivandervelde/master

Plink utils migration
Readded a lot of tests
Merge branch 'master' of https://github.com/molgenis/molgenis-genotype-reader
Restoring some test and small improvements
Merge pull request #20 from PatrickDeelen/master

Genetic variant plus small improvements
Removed old classes
LD calculator works again
Variant annotation
Allele contains function
Not a SNP exception extents genotype data  exception
Test if supplied reference allele is one of the supplied alleles
Move ref allele to first of supplied alleles
Alleles better contains
Improved test VCF
Merge pull request #21 from PatrickDeelen/master

Remove old, more tests, improve variant
Removed get SNP ref allele
Work in progress modifiable genotype data