Update deps.
0.1.13
Move tests to connection group.
Move unknown command test.
Improve command grouping.
Allow passing options to test setup.
Assert on select command.
Assert on auth command.

Completes the implementation for the connection command group.
0.1.14
Assert on multi and discard.
Execute db commands synchronously.
Assert on transaction command handling.
0.1.15
Assert on watch/unwatch.

Remove obsolete request field.
Assert on watch/multi conflict response (null).

Such that watching a key will result in a null response on exec
indicating that the client should try the multi block again as a write
occurred from another client connection on the watched key between
the multi and exec commands.

This completes the transaction group of commands.
0.1.16
Use error module.
0.1.17
Check arity for database command methods.
Improve db command validation.

Should prevent commands being routed to database private methods.