* use XXX for KC_NO in hex4b.h
* add matrix diagram to hex4b.h
* rename LAYOUT to LAYOUT_all
* remove reference to KBFirmware JSON Parser
* info.json: add line breaks between rows
* rename LAYOUT_all to LAYOUT_split_bs
- LAYOUT alias for backward compatibility
- LAYOUT_all alias to signify support for every matrix position
* add LAYOUT_2u_bs
* add LAYOUT_tsangan_split_bs
* add LAYOUT_tsangan_2u_bs
* info.json: remove meta key
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