JSON: Add ability to manipulate data before processing

ref https://secure.helpscout.net/conversation/1114000866/220789/

URL: https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo

Final json data:

{
    "Meta Data": {
        "1. Information": "Daily Prices (open, high, low, close) and Volumes",
        "2. Symbol": "MSFT",
        "3. Last Refreshed": "2020-03-20",
        "4. Output Size": "Compact",
        "5. Time Zone": "US/Eastern"
    },
    "Time Series (Daily)": {
        "2020-03-20": {
            "1. open": "146.0000",
            "2. high": "147.1000",
            "3. low": "135.8600",
            "4. close": "137.3500",
            "5. volume": "84866215"
        },
        "2020-03-19": {
            "1. open": "142.7700",
            "2. high": "150.1500",
            "3. low": "139.0000",
            "4. close": "142.7100",
            "5. volume": "85922661"
        },
    }
}

This does not generate the candlestick chart as the date is outside the root viz. Time Series (Daily). The solution is to be able to add the date to the root.

Start by locating the JSON processing entry point that handles the supplied Alpha Vantage response and the candlestick chart data mapping. Verify how the root viz is selected and determine where the date should be added before processing. Done means the date is available at the root and the example data generates the candlestick chart.