* Use Magic+Esc for entering bootloader mode
* Expand rules.mk
* Improve FN_RCTL tap dance
* Avoid one-line if statements
* Add PROGMEM to keymaps definition
* td_fn_rctl_* → td_fn_rctrl_*
* Fix FN_RCTL tap dance bug when count is 4, 8, 12 etc.
* Add ACTION_TAP_DANCE_DOUBLE_MODS
* Rearrange/rename keycode defines
* Use RAL_RGU and RCT_RSF in keymaps
* Replace keymap ASCII art with box drawing characters
* Add FN_FNLK and use it
* Set Unicode input mode in eeconfig_init_user instead of matrix_init_user
* Rename constexpr keymap folder to konstantin
* Replace numpad comma with Unicode comma
* Rename tap dance constants
* Move record->event.pressed check into switch
* Use RShift as a dedicated Fn key
