* Added support for 'channel' attribute for RedisStore outbound adapter
* Fixed logic in RedisCollectionPopulatingMessageHandler to ensure that RedisHeaders.ZSET_INCREMENT_SCORE can be passed as Boolean true/false as well as String true/false. The current solution is based on relyiong oin ConversionService registered with SpEL Context (see RedisCollectionPopulatingMessageHandler.extractZsetIncrementHeader method). This way other types could be supported without introducing any code changes.