KeeDoc v0.3.0

Important

• Update KeeDoc on every device that opens the same vault. This version
  stores the vault index in a new, safer layout. KeeDoc 0.2.0 does not know
  about it: opened from an older version, a vault would show outdated cards,
  and saving from there could overwrite newer changes. Vaults created with
  0.2.0 open normally and are upgraded the first time they are saved.

Added

• Open and create vaults in cloud folders on Android (Dropbox, Google Drive,
  Mega and other Storage Access Framework providers).
• Edit a card as a draft: changes are kept until you press Save, which
  stores them all at once and returns to the list. Leaving with unsaved
  changes asks whether to save them.
• Show "Syncing…" while a card is being saved.
• Offer to recover the vault index from a previous copy when its pointer
  cannot be read.

Improved

• Saving a card uploads at most three files, however many fields changed,
  which is much faster on cloud-backed vaults.
• Explain which required field is missing when a card cannot be saved.

Fixed

• Notes typed on a card and left with the back button were not saved.
• An interrupted write can no longer destroy the vault index: it is now
  double-buffered and checked after every write.
• Document files are fingerprinted, so a truncated file is detected instead
  of failing silently.
• The auto-lock no longer locks the vault in the middle of a save.
• A vault written by a newer KeeDoc is refused instead of being misread.
• Saving to a cloud folder no longer fails while the provider is still
  listing the file just written.