Make Node store pointers to immediate siblings, first/last child

3 jobs for node in 18 minutes and 14 seconds (queued for 15 seconds)
latest
Status Job ID Name Coverage
  Test
passed #36700
fedora:test

00:17:52

 
  Lint
manual #36702
allowed to fail manual
clippy
passed #36701
rustfmt

00:00:22