for codeship
adapt tests
initial implementation of Task and TaskRepo
Created singleton object that other teams can use
Merge pull request #1 from OlegIlyenko/master

initial implementation of Task and TaskRepo
Added RNG library, simple implementation of task generator.
Merge pull request #2 from oheidemann/master

visibility testing implemented
Merge pull request #3 from OlegIlyenko/master

Added RNG library, simple implementation of task generator.