Initialized with current status of system.
Added Reinigungszeit.
Added Reinigungszeit to Kinosaal.
Added Reinigungszeit to Vorstellung.
Uses now Reinigungszeit for constructors of affected classes.
Added 3D setting to films.
Adapted to give information about 3D to film constructor.
Added hatReinigungszeit method.
Added Werbeblock.
Added Tag and Wochentag.
Added tageSeit method.
Added Woche.
The weekday is now calculated with CALENDAR.
Added dieseWoche method.
Added Wochenplan.
Fixed dieseWoche().
Created new method createWoche to bundle repetitive task.
Added test cases.
Added removal feature for Tagesplan.
Added missing add/removal functionality for Wochenplan.