[chmike]

I looked at it. It's design process is not completed. One strong negative point is that it enforces big endian integer encoding.

Another one is that it doesn't use the value space of tags as efficiently as message pack. I would use the unused space to encode small string size in the tag since objects (associative arrays) have generally many short identifier strings as keys.

I sent these as comments and requests for change but didn't receive any response yet. I don't know how open its design process is.