Try a bit of hack. Add a few types, lambdas and use short construct assignation.
Try if this fixes builds by creating the db. Not sure if I need something more.
Fixes for tests to make them work when travis will update to hhvm 3.0 tomorrow
Commit just to refresh travis build
Merge branch 'develop' into feature/3_improve_bracket
Merge branch 'feature/3_improve_bracket' into develop