Added TCPReno, made CongestionAlg abstract.  Note that TCPReno is not correct yet; it's just a placeholder for now.
don't include xcode stuff
new tests
weird merge
fix up the xcode
Adding capability for SYN before data transfer.
SYN appears to be working.
SYN works, and selective acks are almost working.
Appears to work for a simple case.
Implemented selective acks, will go to go back n now.
Simulation runs, but not entirely to completion.
Simulation appears to be working for basic use case.  FINs have not been added yet.
TCP implementation is more accurate.  Code doesn't appear to terminate.
Improved TCPReno implementation.
More accurate TCPReno.
Fixed error that caused TCPRenoUpdateEvents to be infinitely generated in some cases.
Basic TCPReno case appears to work.  FIN not yet implemented.
Implemented FINs.  Appears to work for simple test case.
Improved logging, cleaned code.
The waitTime is now properly updated.