Refactor dispatcher
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Fix test
Fix Packet.ReadFrom
Add packet tests
Add keepaliveAckPacket
Fix test + move some tests to handshake_test.go
keepalive wip
Move annoucement stuff to handshake.go
Re-add logging when reading from upstream
Rename kgp_client to kgpdemux Start keepalive
Fix tests Rename Relay to Demux
Clean-ups
Fix Packet.Size
refactor packet handling
fix keepalive