Statistics in the totals row

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.28.0/lattice-grid.min.css">
<style>
  #grid > div { height: 460px; }
</style>
<div id="grid"></div>

<script type="module">
  import * as Vue from 'https://esm.sh/vue@3';
  import { createGrid } from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.28.0/lattice-grid.esm.min.js';
  import createLatticeGrid from 'https://cdn.jsdelivr.net/npm/@toclocoinc/lattice-grid@1.28.0/modules/vue.esm.min.js';

  const LatticeGrid = createLatticeGrid({ vue: Vue, createGrid });

  Vue.createApp({
    components: { LatticeGrid },
    data() {
      return {
        config: {
          rowKey: 'id',
          columnDefaults: { filter: true },
          columns: [
            { field: 'reference', title: 'Reference', layout: { pin: 'start', width: 150 } },
            { field: 'desk', title: 'Desk', filter: { type: 'set' } },
            // Each column names its own reduction: median, 95th percentile, deviation.
            { field: 'price', title: 'Price', type: 'number', total: 'median' },
            { field: 'bid', title: 'Bid', type: 'number', total: 'p95' },
            { field: 'volume', title: 'Volume', type: 'number', total: 'iqr' },
            { field: 'notional', title: 'Notional', type: 'number', total: 'sum' },
          ],
          rows,  // trade records, one per row
        },
      };
    },
    template: '<lattice-grid v-bind="config" />',
  }).mount('#grid');
</script>