fix memory leak: issue sewenew#543

add shard pub/sub support

update version to 1.3.10

update redis-plus-plus version

support AsyncRedisCluster::redis, so that we can send command that ha…

…s no key to cluster in async mode

bug fix: run auth before setting resp version

add overloads for xtrim command

update redis-plus-plus version

update redis-plus-plus version

update version number to 1.3.3