CryptoComponentImpl needs some unit tests.

This matches the security level of AES-256 according to NSA Suite B. To
better comply with Suite B we should replace the combination of CTR mode
and HMAC with GCM, which would reduce the MAC size from 48 to 16 bytes.

consequent distinction between segments and frames.

Unidirectional transports and connections are now called
simplex rather than batch. Bidirectional transports and connections
are now called duplex rather than stream.

No Thread.sleep() till Brooklyn.

packet.

connection was recognised.

plugin.

This will enable asynchronous access to the database for IO threads.