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This release adds the ability to view locked activities in the timetables and toggle lock/unlock activities in the timetable, lock/unlock the activities of a certain day, and lock/unlock the activities that end a student's day. The constraints activity preferred starting time and activity preferred room have now an attribute, which can mean that some constraints are added permanently by the human operator and cannot be unlocked from the view timetable form. There are minor bugfixes and improvements. The output of the activities timetable as XML has been added.