0.2.1

Added

• System tray icon for k86-gui (libayatana-appindicator) with a menu to show or hide the
  window and quit. Settings → Application: show the tray icon, keep running in the tray when
  the window is closed, start minimized to the tray (saved in ~/.config/k86-gui/settings.ini).
• k86-gui --minimize starts hidden in the tray; closing the window then keeps it there. The
  window opens anyway when no tray is available.
• libk86: a shared library with a C API (<k86/k86.h>, pkg-config k86) so other programs can
  change the keyboard like k86ctl does: lighting, side light, key maps and Fn layers, macros,
  per-key colours, LCD images, clock and stats, profile, debounce, sleep, options, factory
  reset, and a simulated keyboard for testing. Included in the release archives and packages.

Changed

• The packages depend on libayatana-appindicator.