Update to 2.0.
* Major code refactoring, see README.2.x for more information.
* Cleanup code to please Perl::Critic.
* Removed support for blocking I/O, only non-blocking I/O is supported.
* Now using the No::Worries and Params::Validate modules from CPAN.
* Added STOMP 1.2 support.
* Added the queue_message() and send_message() methods for convenience.
* Added optional authentication support via Authen::Credential.