* remove old fuzz corpus and stick to using PCG for seeding fuzz test
* polish up drain logic and reduce action search space
* improve fuzzing debug prints
* more fuzz fixes also formatter capture printer fixes
* refactor StackSeeded test
* fix challenge ack infinite packet bug
* more expressive challenge satisfy
* remove printing
* begin adding better fuzz test
* finish adding working fuzzer
* implement mutateipv4
* fuzzer finds a panic in ICMP client on receive empty payload
* rename fuzz tests to reflect fuzz methodology
* fix for #58
* add fixes for both retransmit and fuzz failure found
* fix infinite challenge ack due to RST+SYN+FIN corrupt packet in SYNRCV state
* fuzz: previous recovery ack path led to infinite transmit
* fuzz: calculate CRCs when fuzzing to reduce search space to non-CRC error cases
* add local fuzz corpus to tests
* add more cases to fuzz corpus