The SSL hostname so that SSL SNI based proxies can route a connection properly.
Merge pull request #67 from chirino/master

Set the SSL hostname so that SSL SNI based proxies can route a connection
Proper cleanup when not reliable and EOF from broker
Issue #63, fast spurious fail overs.

Added connection parameter to allow clients to supply
an adjustment value to the sender heartbeat sleep time.
See notes/heartbeat_readme.txt for guidance on use.