* binary SMP protocol encoding (server tests fail)
* use 1 byte for bytestring length when encoding/decoding
* Encoding class, binary tags
* update server tests
* negotiate SMP version in client/server handshake
* add version columns to queues and connections
* split parsing SMP client commands and server responses to different functions
* check uniqueness of protocol tags
* split client commands and server responses/messages to separate types
* update types in SMP client
* remove pattern synonyms for SMP errors
* simplify getHandshake
* update SMP protocol encoding in protocol spec
* encode time as a number of seconds (64-bit integer) since epoch