Allow to disable graft lines in graph
Created originally on Bitbucket by xrstf (Christoph)
I'm using graft
to backport some important patches from the default branch to my release branches. Thanks to the new graft lines, my graph is now blown up to 9 parallel lines, which just looks ridiculous.
I can see that it's nice to be able to see the relations in grafts visually, but please allow me to hide the lines.