tor-parallel-relay-conn/changes/optimistic-client

  o Major features:
    - When using an exit nodes running 0.2.3.1-alpha and later,
      clients can now "optimistically" send data on a stream before
      the exit node reports that the stream has opened. This can save
      a round trip when starting connections with protocols where the
      client speaks first.  Implements proposal 181; code by Ian
      Goldberg.