All looking pretty good. A number have changed since it looks like lyrics
are placed slightly further from the staff than before - this pushes lower
staves down. completion-heads-factor.ly has had some more notes added to
the test. page-spacing-staff-group-nested.ly now sets the nested staves in
a different place from before, but it's not clear to me whether this is a
problem, or just different. The major change is lyrics-bar.ly, where the
previous release had the text over the lines of the staff, which looked
wrong to me and I was persuaded was not a bug, but now there's no collision.