v2.8.0

• breaking-change: zadd return Int64 | String (instead of Int64) (#112)
• breaking-change: hgetall now returns Hash(String, String) instead of Array(String) (#4, #77)
• breaking-change: hscan now returns Hash(String, String) instead of Array(String) as second result
• Fix del to receive Array(RedisValue) (#100, #101, #105)
• Add hset method with Hash argument (#113, thanks @tachyons)
• Fix brpoplpush to work with namespaces
• Add geosearch method (#115, thanks @yrgoldteeth)
• Unsubscribe now reset connection, and can be used as usual (#106, #108)
• Add options for zadd: nx, xx, ch, incr (#112, thanks @noellabo)
• Fixed ping command in subscribe (#28)