Fix logging of retry packets and client side bug

only-check-token-on-first-initial

Streamline stream state flags

Remove version 13 code

Verify stream Id max controls

Log leading zeros in Initial CID. Fixes issue #389 

Revise the RACK logic

Server false start and implicit ack

Verify that initial CID is at least 8 bytes

Build fixes and the draft-14 removal

Add key rotation stress test

Fix prepare stream frame

If we do not set `consumed` we could loose data!

Otherwise we could end in situations where the packet is padded and the
padding bytes are interpreted as packet data.

Look for extensions in all available slots.