Parse your sparkle appcast into html, so you don't have to manually add it into your versions page

parseAppcast.js

$(document).ready(function(){
   $.ajax({
    type: "GET" ,
    url: "downloads/updates.xml" ,
    dataType: "xml" ,
    success: function(xml) {
      var items = []

      $(xml).find('item').each(function(){
        var item = $(this)

        var description = item.find('description').text()

        // only include ones that have a description
        if (description === "") {
          return
        }

        var parsedItem = {}

        parsedItem.title = item.find('title').text()
        parsedItem.date = new Date(item.find('pubDate').text())
        parsedItem.url = item.find('enclosure').attr('url')
        parsedItem.description = description

        items.push(parsedItem)
      });

      // sort by most recent first
      items.sort(function(a, b){
        return a.date > b.date ? -1 : 1;
      })

      // cut it to first 3
      items = items.slice(0, 3)

      items.forEach(function(item, index) {
        var div = $('<div></div>')
        var title = index === 0 ? item.title + ' Current Version': item.title
        div.append('<h4><a href="' + item.url + '">' + title + ' <i class="fas fa-download"></i></a></h4>')
        div.append(item.description)
        $("#versions").append(div)
      })
   }

  });
});