Chartjs-Chart.js combine two pieces of data into one bar

Version 2 does support stacked bar charts.

https://jsfiddle.net/r71no58a/10/

   scales: {
        xAxes: [{
            stacked: true,
        }],
        yAxes: [{
            stacked: true,
            ticks: {
                beginAtZero: true
            }
        }]
   }