* skjoldr.h: use ___ for KC_NO
* skjoldr.h: use K<row><column> notation
Matrix was previously defined using identifiers in the format of K<column><row>.
* skjoldr.h: add matrix diagram
* info.json: apply friendly formatting
- key legends as labels
- correct key sizes and positioning
* refactor keymaps
Refactors the `default` and `via` keymaps.
- use QMK-native keycode aliases
- grid-align keycodes for readability
* rename LAYOUT macro to LAYOUT_60_ansi_arrow
* enable Community Layout support
* info.json: correct maintainer value
Field is meant to reference the maintainer's GitHub username.
