Release v3.16.2-beta.3 (#1774)

Improvements for all users:

• We use a local Pouch database to keep track of all documents and their
  metadata. Part of this metadata are the remote identifier of each document on
  the Cozy and its last known revision. Whenever we make a change on a document,
  we fetch its previous version from the local Pouch database so we can access
  its old metadata. When the change happened locally, we pass along to the Cozy
  this old metadata's remote revision so it can validate we're not overwriting a
  document that was changed on the Cozy without our knowledge. It appears we
  made a mistake in the order old revisions are returned to us by Pouch and that
  we were not always fetching previous revision but usually the second known
  revision. This would mean local changes on the document would not get
  propagated to the remote Cozy.
  We fixed this revision selection which should avoid quite a lot of propagation
  issues and further down the road conflicts as well.

See also known issues.

Happy syncing!