EventValueFactory.cpp: SF
EventValueFactory.cpp: use range-based loop
StateHistorySink: implement initTranslators()
StateHistorySink: set/get current timestamp
StateHistorySink: implement open/close
EventValueFactory: no static lambdas
StateHistorySink: implement a few things
StateHistorySink: writeInterval() finds entry
StateHistorySink: implement removeState()
StateHistorySink: implement setState()
StateHistorySink: write remaining state values when closing