tune for loading GPL annotation file
Merge branch 'master' of https://github.com/transmart/tranSMART-ETL
Merge pull request #2 from thehyve/master

Make ETL pipeline more robust for null values
Added .gitignore with files generated by IntelliJ/Idea
Merge transmart/tranSMART-ETL (upstream)

$ git log --no-merges --pretty=oneline --abbrev-commit  upstream/master ^origin/master
a0857f9 Added .gitignore with files generated by IntelliJ/Idea
fb2e6c1 tune for loading GPL annotation file