Add failing test with SCTP Packet from Google Chrome when unpacking
packet. Contents of packet is a valid DCEP! If we respond to this ACK,
we should be able to start getting packets from the browser
* Make sure errors in SCTP make it all the way back
* Move structs into files with proper names in SCTP
* Add String() for AssociationState enum
* Add callbacks to Association to that we can handle
DATA in the DataChannel package and send outbound SCTP