Allow a "straightened" side-by-side comparison (feature request)
Context: the correspondence between the left and right side is visualized by capturing the left side chunk in a coloured "balloon", and connecting it to a "balloon" on the right side. If these balloons are shown at different heights then it's sometimes hard to understand which left-side chunk corresponds to which right-side chunk.
Request: I would like to be able to switch to a straightened view in which corresponding balloons are always top-aligned. This can be accomplished by inserting empty space (on the left and/or right side, as needed). Ideally, these empty spaces - in which you cannot edit - would have a subtle background color. And ideally I could enable/disable this view with a short-cut key.