#40 Add arrows to identify that there are unseen in-line differences

[Jeffry Johnston]

Diffuse already highlights differences within a line. However, when a line is too wide to fit horizontally in the window, it is difficult to tell where all the differences are, especially if there are differences at the beginning and then near the end of the line. This results in having to scroll left and right to make sure all the differences were noticed.

I propose adding arrows at the left and right of each visible line if there are unseen (off-window) differences in that direction. If there are no differences, then no arrow would be visible. This would make it easy to tell if there are additional unseen differences that should be looked at.

Additionally, if possible, it would be great to be able to click the new arrows to have the window scroll left or right so the next difference comes into view.

I'm sure this could clutter the screen and be annoying sometimes, so I also request an option to enable or disable the feature.