Milestones
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Extend configuration menu: enable/disable selectable keys and mode; add presets for user-definable fixed key/tempo/mode/metre selection; toggle between normal and preset mode; add playback "toggle on button press" playback modes as alternative to "play while button pressed" mode.
No due dateUI addition: add configuration menu structure and generic font for it. Add user-defined configuration, stored on EEPROM, and handling for: default key/tempo/mode/metre; name for notes between A and C (A#/Bb/B, B/H), backlight brightness; UART baud rate; humanizing options for playback.
No due date