[subsurface/f20] (6 commits) ...Merge branch 'master' into f20

[Pierre-YvesChibon]

Summary of changes:

  825de5c... Bump release to update the description (*)
  1e9fa5c... Manually install the AppData file (*)
  8090c70... rebuild (marble) (*)
  9e1c57d... Update to 4.3 (*)
  c92e52e... No more ReleaseNotes.txt (*)
  e98a36a... Merge branch 'master' into f20

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