Upgrade from 5.0.1 to 5.0.2.

<ChangeLog>

Upgrade urgency: CRITICAL if you use streams and consumer groups.

HIGH if you use redis-cli with Redis Cluster.
LOW otherwise.

Welcome to Redis 5.0.2. This release fixes two issues with Streams consumer
groups, where items could be returned duplicated by XREADGROUP when accessing
the history, and another bug where XREADGROUP can report some history even
if the comsumer pending list is empty. Both problems were addressed and unit
tests to avoid regressions implemented. Moreover this release fixes some
issue with redis-cli when in cluster mode. Finally some FreeBSD and DragonFly
build problems are now resolved.

</ChangeLog>