Release corresponding to libmemcached 1.0.18

Release of ElastiCache Cluster Client for C/C++ corresponding to version 1.0.18 of the upstream libmemcached project.

Release (backdated) corresponding to libmemcached 1.0.8

Release of ElastiCache Cluster Client for C/C++ corresponding to version 1.0.8 of the upstream libmemcached project.

Please note that this release and tag have been created on GitHub long since the actual code it points to has been released. It was added after the fact for clarity only and there were no recent updates to the client immediately preceding it.