FluxRecord supports dictionary-style access

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The FluxRecord supports dictionary-style access:

record = FluxRecord()
record["table"] = 0
record["_start"] = _time
record["_stop"] = _time
record["_time"] = _time
record["_value"] = 1.0
record["_field"] = 'water level'
record["_measurement"] = 'h2o'
record["location"] = 'coyote_creek'

print(table.records[0]["_measurement"])
print(table.records[0]["_field"])
print(table.records[0]["_value"])

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