v0.13.1

• do not treat each disc of a multi-disc album as a separate album (#680)
• fix year tag not being extracted from M4A files (#744 by @ChrisJAllan)
• fix disc number tag not being extracted from M4A files (#746)
• update getID3 to development version 1.9.19-202003150936
  • should fix cover art not showing up on M4A files (#743)
  • fixes the issue which forced us previously to remove one commit from v1.9.19
• log the error if opening a file for metadata extraction fails (#123)
• do not stop the whole scanning process if opening a file throws an exception
• tweak the ordering of the fields in the track details pane
• fix embedded player not showing metadata for the unscanned files (regression introduced in v0.13.0)