Support CRDTs

[marksteele]

I realize this is probably too wishful, but would be nice to have CRDT support of some sort.

Something like specify the buckettype/bucket/key, data type, then possibly a json describing mutations? (follows same semantics as HTTP and erlang interfaces)

Counter:

{"decrement": 3}

Sets:

{"remove": "Montreal","add_all":["Hamilton", "Ottawa"]}

Maps:

{
    "update": {
      "annika_info_map": {
        "update": {
          "purchase_map": {
            "update": {
              "first_purchase_flag": "enable",
              "amount_register": "1271",
              "items_set": {
                "add": "large widget"
              }
            }
          }
        }
      }
    }
  }

Would make it relatively to build up this mutations via a javascript step