* add matrix_diagram.md
* info.json: apply friendly formatting
* rename LAYOUT_all to LAYOUT_60_tsangan_hhkb
* add LAYOUT_60_ansi_tsangan_split_rshift
* refactor default and via keymaps
- use four-space indent
- grid-align keycodes
* copy via keymap to default
The default keymap didn't make sense to me - it included keycodes for features that aren't supported, and the arrow key alignment on the function layer was wonky.
* enable Community Layout support
