* add matrix_diagram.md
* refactor keymaps
* fix Configurator implementation
The original C-based code had an off-by-one error in the key sequence, that was then converted in data-driven configurator without being corrected.
* info.json: apply friendly formatting
* add LAYOUT_60_ansi_split_bs_rshift
* add LAYOUT_60_ansi
* add LAYOUT_60_tsangan_hhkb
* add LAYOUT_60_ansi_tsangan
* add LAYOUT_60_iso_split_bs_rshift
* add LAYOUT_60_iso
* add LAYOUT_60_iso_tsangan_split_bs_rshift
* add LAYOUT_60_iso_tsangan
* enable Community Layout support
* edit keyboard maintainer
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