Version 2.3.1

• The GUI now offers SI or binary units for sizes and speeds, and automatically remembers the selected units and buffer size between runs.
• Overall transfer progress is also shown on the app icon, and the window requests attention when an upload finishes or an error occurs.
• Optional sound when an upload completes successfully, with the preference saved automatically.
• New “Show passwords” option to show or hide all password fields, including the archive password prompt, with the preference saved automatically.
• Various GUI visual refinements.