Return boolean in Redis::write when using multi-keys.
Return boolean in Redis::write when using multi-keys.

whowgames/lithium,graphis/lithium,whowgames/lithium,datachand/lithium,muyehub/lithium,jails/lithium,pixelcog/lithium,jails/lithium,davidpersson/lithium,davidpersson/lithium,muyehub/lithium,wbeater/lithium,wbeater/lithium,UnionOfRAD/lithium,datachand/lithium,pixelcog/lithium,m4rcsch/lithium-core-library,m4rcsch/lithium-core-library,graphis/lithium,UnionOfRAD/lithium