title: Tabulator persistentFilter not checking for headerFilterEmptyCheck
body: <p>Using Tabulator 4.4.3</p>
  
  <p>When filtering the checkbox normally, everything works
  If I set a filtered checkbox to true on a column, it works:</p>
  
  <pre><code>  headerFilterEmptyCheck: function (value) {
         return !value;
       },
  </code></pre>
  
  <p>However, with using persistentFilter: true and I reload the page, that checkbox filter will only display true=true, never false or null when unchecked (just return 0 rows)</p>
  
  <p>My Column Definition</p>
  
  <pre><code>{
       title: "do it?",
       field: "hasToDoIt",
       responsive: 0,
       formatter: "tickCross",
       formatterParams: {
         allowEmpty: true,
         allowTruthy: false,
         tickElement: "&lt;i class='fa fa-check'&gt;&lt;/i&gt;",
         crossElement: ""
       },
       headerFilter: "tickCross",
       headerFilterEmptyCheck: function (value) {
         return !value; //only filter when the value is true
       },
       sorter: "string",
       headerSortTristate: true,
       width: 80,
       align: 'center'
     },
  </code></pre>
  
  <p>Table Definition</p>
  
  <pre><code>new Tabulator("#" + config.Key, {
        index: "_id",
        reactiveData: true,
        persistenceMode: true,
        persistenceID: "accountsummary",
        persistentSort: true,
        persistentFilter: true,
        autoResize: true,
        layout: "fitColumns",
        responsiveLayout: true,
        virtualDomBuffer: 100,
        headerSortTristate: true, //enable tristate header sort for all columns
        data: this.state.Data,
        columns: this.state.Columns,
        groupBy: "Geo",
        groupToggleElement: "header",
        groupStartOpen: true,
        sortOrderReverse: true,
        initialSort: [{ column: "Geo", dir: "asc" }, { column: "Account", dir: "asc" }],
        rowClick: (e, row) =&gt; {
  
          });
        }
  </code></pre>
  
  <p>After selecting the checkbox, reloading the page, the checkbox should show the filtered results and unchecking the box show return to show all rows</p>