KOHighlights v1.5.0.0

• Added:
  • "Show in Highlights" menu has a new entry, "Date Format", where you can customize the appearance of the date using format codes (info here).
    This influences the way the date is formatted when the highlights are exported, and the way its presented at the "Book Info" panel.
    It is not supported in the CLI side of the app though.
• Fixed:
  • Exporting highlights to csv from "Highlights View" did not work.
  • Some display problem when the system uses a dark theme.