rust-data-processing 0.3.0

Schema-first ingestion (CSV, JSON, Parquet, Excel) into an in-memory DataSet, plus Polars-backed pipelines, SQL, profiling, validation, and map/reduce-style processing.
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<?xml version="1.0" encoding="UTF-8"?>
<rdp_records>
  <record>
    <stationCode>ACW00011604</stationCode>
    <lat>17.1167</lat>
    <lon>-61.7833</lon>
    <elev_m>10.1</elev_m>
    <label>ST JOHNS COOLIDGE FLD</label>
    <region></region>
  </record>
  <record>
    <stationCode>ACW00011647</stationCode>
    <lat>17.1333</lat>
    <lon>-61.7833</lon>
    <elev_m>19.2</elev_m>
    <label>ST JOHNS</label>
    <region></region>
  </record>
  <record>
    <stationCode>AE000041196</stationCode>
    <lat>25.333</lat>
    <lon>55.517</lon>
    <elev_m>34</elev_m>
    <label>SHARJAH INTER. AIRP</label>
    <region></region>
  </record>
  <record>
    <stationCode>AEM00041194</stationCode>
    <lat>25.255</lat>
    <lon>55.364</lon>
    <elev_m>10.4</elev_m>
    <label>DUBAI INTL</label>
    <region></region>
  </record>
  <record>
    <stationCode>AF000040930</stationCode>
    <lat>35.317</lat>
    <lon>69.017</lon>
    <elev_m>3366</elev_m>
    <label>NORTH-SALANG</label>
    <region></region>
  </record>
</rdp_records>