[FOLD] reformat invoke
Move the call to cancel_timer to the right place
Fix to_string for beast::asio::streambuf
[FOLD] Use injections from OverlayImpl in PeerImp
[FOLD] use cluster state in Slot instead of PeerImp
Calculate protocol message type and size from iterator range.
Add ProtocolInputStream:
This implements Google protocol buffers ZeroCopyInputStream
around a ConstBufferSequence.
[FOLD] Message::size, type
[WIP]