Javascript will not update streams

Line 58 in heartbeat.streams.inc is setting the wrong key value for the array 'heartbeatPollNewerMessages'.
It is currently:

    drupal_add_js(array('heartbeatPollNewerMessages' => array($streamConfig->name => $streamConfig->poll_messages)), 'setting');

but should read

    drupal_add_js(array('heartbeatPollNewerMessages' => array($streamConfig->class => $streamConfig->poll_messages)), 'setting');

I have a feeling this is probably addressed in dev, but stable 7.x-1.0 release seems pretty far behind the dev version. You might want to look into that.