=====
* Don't use 'immediate' flag for publishing when not using
pubacks - due to RabbitMQ 3.0 changes.
* Support for some unusual data types in tables:
None, float (including nan and inf) and some unsigned integers.
* 19 - some more tweaks for that.
* Support 'client_properties' parameter in constructor,
which can be used to pass data to the browser.
* RabbitMQ way of handling user/pass problems changed -
the connection is now dropped instead of sending
a connection-close method.
* 17 - some more puback / fake puback tests
* 15 - on windows errno.ENOTCONN had different value
than on linux / mac.
* Set fcntl FD_CLOEXEC on puka sockets - we don't want child
processes to get a copy of our descriptor.
* 26 - basic support for AMQP heartbeats