* info.json: apply friendly formatting
* han60.h: add matrix diagram
* han60.h: tidy file
- remove trailing whitespace
- use four-space indent
* info.json: remove key overlaps from LAYOUT_all rendering
* rename LAYOUT_tsangan to LAYOUT_60_ansi_tsangan
* rename LAYOUT_tsangan_arrowkeys to LAYOUT_60_ansi_arrow_tsangan
* refactor LAYOUT_tsangan_iso into LAYOUT_60_iso_tsangan
Moves position `K2C` (Enter) to the home row.
* refactor LAYOUT_tsangan_iso_arrowkeys into LAYOUT_60_iso_arrow_tsangan
Moves position `K2C` (Enter) to the home row.
* refactor default keymap
- use four-space indent
- use QMK-native keycode aliases
- grid-align keycodes
* bugfix layout macros
* add reference keymaps