* Allow explicit inclusion of session tags in the SDK, enabling the
resending of tags bundled with messages that would not otherwise
be ACKed.
* Don't force mode=guaranteed for end to end delivery - if mode=bestEffort
no DeliveryStatusMessage will be bundled (and as such, client apps using
it will need to do their own session tag ack/nack).
* Handle client errors when notifying them of message availability.
* New StreamSinkSend which sends a file to a destination and disconnects.
* Update the I2PSocketManagerFactory to build the specific
I2PSocketManager instance based on the "i2p.streaming.manager" property,
containing the class name of the I2PSocketManager implementation to instantiate.
or even whether to have the blocking action timeout and close the socket after
a certain delay
* refactored the I2PSocketOptions to be more actively used
* added a pair of ministreaming lib demo apps:
- StreamSinkServer listens to a destination and dumps any data it receives on a socket to a per-socket file
- StreamSinkClient sends a destination a specified number of random bytes, then disconnects
