[Solved]-Rounded edges Gauge with Highcharts.js-Highcharts

It is probably more correct to create a proper extension to Highcharts, but it's possible if you add wide borders to the gauge elements and tweak the SVG like this:

var svg;
svg = document.getElementsByTagName('svg');
if (svg.length > 0) {
    var path = svg[0].getElementsByTagName('path');
    if (path.length > 1) {
        // First path is gauge background
        path[0].setAttributeNS(null, 'stroke-linejoin', 'round');
        // Second path is gauge value
        path[1].setAttributeNS(null, 'stroke-linejoin', 'round');
    }
}

Example: http://jsfiddle.net/Penstrife/1s8sfqtn/