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* add matrix_diagram.md * info.json: apply friendly formatting * refactor keymaps - use four-space indent - grid-align keycodes - use QMK-native alias for `KC_TRNS` * add LAYOUT_tkl_f13_ansi * add LAYOUT_tkl_f13_ansi_split_rshift * add LAYOUT_tkl_f13_ansi_tsangan * add LAYOUT_tkl_f13_ansi_tsangan_split_rshift * add LAYOUT_tkl_f13_iso * add LAYOUT_tkl_f13_iso_split_rshift * add LAYOUT_tkl_f13_iso_tsangan * add LAYOUT_tkl_f13_iso_tsangan_split_rshift * enable Community Layout support * Apply suggestions from code review