* fmh.h: add matrix diagram
* info.json: apply friendly formatting
* physically arrange LAYOUT_all macro
Move position `K5D` (right half of Split Backspace) to the end of the top row.
* rename LAYOUT_all to LAYOUT_60_tsangan_hhkb
* add LAYOUT_60_ansi_tsangan
* add LAYOUT_60_hhkb
* add LAYOUT_60_ansi_wkl
* add LAYOUT_60_ansi_wkl_split_bs_rshift
* enable Community Layouts support
