Ugin: lines have been added as requested and checked into GIT. I know you probably just upgraded and may not want to test, but if you do a static tar for Ubuntu 18 (and Ubuntu 16) is at:
If you just want to see what it looks like instead of testing it, you can see the lines in this quick setup I did (a png would have been better, but I am lazy today) https://streamable.com/38sjl I hope it looks OK for you and will probably not even be noticed by long time users. Phyllis/GG
For example, to me personally, the border between the tracks is not at all obvious,
especially when there are a lot of them.