support of "half" slurs with open end (in a repeat measure)
In case of repeats (or jumps) sometimes a "half" slur is necessary. This means that the last chord of the measure shall be merged to the first chord of the measure that is jumped to.
The same applies to hold slurs (the difference is just that the notes are really merged to one). But as a first approach normal slurs would do it, too.
Actually a slur always connects to the chord of the next measure - which is of cause the normal behaviour.