Revise the logging code to present client cnxid. Also, fix a potential loop on RACK DELAY and on Challenge timer.

Making sure that picoquic client does not send 0-rtt data if the ticket does not include support for 0-RTT

Making sure that the client exercizes 0-RTT with a regular "get index.html" frame, and fix a few issues that prevented the scenario from working.

Attempt to fix closing state handling, and add more logging

Proper serialization of tickets for storage.

Vs analysis

Fix mem issues

Fuzz skip and log

Add most recent fixes

More crash/test fixes