Upgrade from 3.0.0 to 3.0.1.

<ChangeLog>

--[ Redis 3.0.1 ] Release date: 5 May 2015

Upgrade urgency: LOW for Redis, Sentinel, Cluster.

• [FIX] Sentinel memory leak due to hiredis fixed. (Salvatore Sanfilippo)
• [FIX] Sentinel memory leak on duplicated instance. (Charsyam)
• [FIX] Redis crash on Lua reaching output buffer limits. (Yossi Gottlieb)
• [FIX] Sentinel flushes config on +slave events. (Bill Anderson)

</ChangeLog>