0.23.2

Security

• Updated the Electron runtime to 43.7.5 (more upstream Chromium security
  fixes, plus a Windows fix for windows that could fail to appear).
• Updated the audio-tag reader (music-metadata 11.16.1), which adds several
  protections against deliberately malformed files.

Fixed

• That tag-reader update is stricter about damaged .m4b/.m4a files: a file
  whose end is slightly truncated would have lost its title, author, narrator
  and cover entirely, even though that information is intact near the start
  of the file. The app now reads those details itself when this happens.
  Checked against a real 6,800-file library: of the 12 damaged files it
  affected, every one that had readable details keeps them, and two that
  previously showed no details at all now show their real title, author and
  cover. (The twelfth is damaged right from its first byte; it never had
  readable details and is now listed under Read problems.)