- Handling messages with flags DONT_BUNDLE and OOB (possibly also with INTERNAL) on a seperate thread (https://issues.jboss.org/browse/JGRP-1737)
- Removed 'created' from BatchHandler (together with a System.nanos())

- Removed last_bundle_time from DefaultBundler (plus 1 System.nanos() call *per message*)

- Deprecated enable_batching (on by default)

- Added ignore_dont_bundle

- Set ignore_dont_bundle to true by default