fix inbox#2132 Selection Sets crash changing ID (!1664) · Merge requests · Inkscape / inkscape · GitLab

Thomas Holder requested to merge speleo3/inkscape:0.92.x-inbox-2132 into 0.92.x Apr 03, 2020

Remove unused SPTagUse::child and SPTagUse::root()
SPTagUse::href_changed -> update xlink:href
Selection sets dialog: respond to ID change

/cc @jhofinger