Merge pull request #40 from harmjanwestra/master

Removal of duplicate and unused classes
Merge pull request #41 from harmjanwestra/master

- fix missing classes
Added trityper to genotype reader auto loader
Methods for trityper reader te completly ignore excluded individuals. Can save a lot of memory if used in combination with a qc filter. This way only SNPs with maf >5% in included individuals will be read.
Bug fix in sample filter
Merge pull request #42 from PatrickDeelen/master

Genotypedata reader fixes and improvements
- Fix: check whether genotype data is correctly loaded and samples are included.