[calibre/f20] (8 commits) ...Update to 1.21.0

[Kevin Fenzi]

Summary of changes:

  dab5a70... Update to 1.11.0 (*)
  e8d1757... Update to 1.13.0 (*)
  db527d7... Update to 1.14.0 (*)
  9228dcd... Update to 1.17.0 (*)
  7236efb... Update to 1.19.0 (*)
  fb4d60e... Update to 1.20.0 (*)
  713d700... Add appdata (*)
  5204ee7... Update to 1.21.0 (*)

(*) This commit already existed in another branch; no separate mail sent