qunion (scala) refactored to immutable board
qunion (scala) refactored to immutable board

dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas,dkandalov/katas