* Reworded the SSU introductions config section (thanks duck!)
* Force identity content encoding for I2PTunnel httpserver requests
(thanks redzara!)
* Further x-i2p-gzip bugfixes for the end of streams
* Reduce the minimum bandwidth limits to 3KBps steady and burst (though
I2P's performance at 3KBps is another issue)
* Cleaned up some streaming lib structures