added automatic delayed shutter closing

klappezu.py

+from slic.devices.general.shutter import Shutter
+from slic.utils.run_later import run_at, tomorrow
+
+sh1 = Shutter("SATFE10-OPSH066")
+sh2 = Shutter("SATOP21-OPSH138")
+
+def close():
+    sh1.close()
+    sh2.close()
+
+def klappezu():
+    run_at(tomorrow(7), close)
+
+