fixed test clean up
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Merge pull request #183 from PatrickDeelen/master

Added trityper writer to genotype IO package
Small optimization of binary plink writer
Small optimization of binary plink writer
Merge molgenis/master
Minor changes to mediation code.
fixed error message
First step multipart paths
fix import
editable genotype data
Use trove to improve memory footprint of binary plink
fix comparator metatrait4. Should only be 0 is equals is true.
made members private
improved textfile reader
use text file iterable that split using new object to save memory and give clean code
use updated textfile reader
added metaTrait4 treeset
First version of trityper writer
Added test for trityper writer + bug fix writer