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.

0.2.0

Added

• New GUI that works like the original software: a drawing of the K86 (taken from the original's
  layout) on the Keys and Fn layer pages; click a key (Ctrl-click for several) and pick its new
  action from categories (keys and combinations, media, mouse, macro, lighting, side light,
  connection, system, profile). Changes are written right away.
• Lighting page with effect tiles, named directions, colour swatches and a preview; side light.
• Per-key colour painting (click or drag, fill, rainbow, pick from key).
• Macro editor with the 50 slots, recording from the keyboard, editable delays and a key picker.
• Everything is read from the keyboard when it is connected; the keyboard is found
  automatically, also when plugged in later. Device I/O runs in the background.
• Profile switcher: view and edit any profile, make one the active profile.
• Names for the K86 firmware functions on the factory Fn layer, from the K86 user manual:
  Bluetooth 1-3 and 2.4 GHz, Win lock, battery level, factory reset, backlight effect, colour,
  speed and on/off, side light effect, colour, brightness and speed, knob mode
  (conn:BT1, sys:WinLock, side:NextEffect, ... in k86ctl), plus profile:1-profile:3.
• Readable names everywhere ("Macro 3 (toggle)", "Win + D", "Page Up"); k86ctl keymap show
  prints them next to the action.
• k86-gui --read-only (nothing is ever written), --page, and --self-test, which clicks
  through every page against a simulated keyboard and checks the result (also run by ctest).
• Protocol simulator (SimulatedTransport) used by --dry-run, the self-test and the unit tests.
• The release workflow runs the GUI self-tests under Xvfb.

Changed

• k86-gui --dry-run simulates a keyboard with state instead of echoing commands; writes are
  printed to the terminal.
• Settings show on/off switches with descriptions instead of raw numbers.

0.1.1

Added

• Attack Shark icon for the GUI's window and desktop entry.

0.1.0

First release.

Added

• k86core C++17 library for both K86 firmwares: YC3121 (3151:4015) and YC3123
  (3151:5002), over Linux hidraw.
• k86ctl command line tool and k86-gui GTK 3 GUI.
• Lighting effects, side light, per-key colours and per-key animations.
• Key and Fn layer remapping (3 profiles), factory layouts, export and import.
• Macros (50 slots).
• LCD: images and animated GIFs, clock sync, system stats (YC3123), erase.
• Profile, debounce, sleep timers, option flags, factory reset, raw commands.
• --dry-run mode that prints the reports instead of sending them.
• udev rule for access without root, and a desktop entry for the GUI.
• Protocol documentation (docs/PROTOCOL.md) and golden-report tests against the original
  driver.
• Packages for x86_64 and aarch64: .tar.gz, .deb, .rpm and pacman, with SHA-256 sums.

Fixed (found testing on a YC3121 K86)

• Wait for the firmware to finish committing each write. Reads during the commit returned
  stale data, and reading too early could reboot the keyboard.
• macro clear did not send anything.
• The per-key animation effect is reported instead of causing an error, and per-key colours
  are no longer lost when written while an animation plays.
• Side light support on the YC3121, which the original driver does not offer.