prio 0.17.0

Implementation of the Prio aggregation system core: https://crypto.stanford.edu/prio/
Documentation
{
    "agg_param": "",
    "agg_result": 100,
    "agg_shares": [
        "21d79fba22fcea2e",
        "44296045dc0315d1"
    ],
    "ctx": "736f6d65206170706c69636174696f6e",
    "max_measurement": 255,
    "prep": [
        {
            "input_shares": [
                "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",
                "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
            ],
            "measurement": 100,
            "nonce": "000102030405060708090a0b0c0d0e0f",
            "out_shares": [
                [
                    "21d79fba22fcea2e"
                ],
                [
                    "44296045dc0315d1"
                ]
            ],
            "prep_messages": [
                ""
            ],
            "prep_shares": [
                [
                    "3930d34b74e6676f0158033969b58f5f113b356a799287a5",
                    "c8cf2cb48a199890ca5a3a856a34c034919f038dd5483648"
                ]
            ],
            "public_share": "",
            "rand": "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f"
        }
    ],
    "shares": 2,
    "verify_key": "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
}