Merge pull request #81 from PatrickDeelen/master

Some minor genotype reader stuff
Findbug fixes
Merge pull request #82 from Bonder-MJ/master

Findbug fixes
More findbug fixes
Findbugs
Matrix handeling for new matrices
Findbugs
Merge pull request #84 from Bonder-MJ/master

Findbug fixes and matrix handeling
Merge branch 'master' of https://github.com/molgenis/systemsgenetics