v12.8.0

• sync: new --needs-review <true|false> option. The target-language values go
  live as usual but marked as needing review, so the editor lists them in the
  review queue until someone confirms them. Target languages only (like
  --review), and ignored together with --review true, because proposals
  carry no mark. Needs --reference-language-only false to send target
  languages at all.
• gettext: the mark round-trips as #, fuzzy. Fuzzy entries in .po files
  arrive marked as needing review (target languages), and a download with
  --unpublished true writes marked values back out as fuzzy; published files
  carry no marks. Needs gettext-converter 1.4.0.