Templates cannot contain more than one tangent point between the end points

[notator]

Contrary to the README: A template can only have 3 point/control pairs. The startPair, endPair and a single, optional tangentPair in between.
In other words: 4 or 6 relevant coordinates: See Converter.js:

    // points is an array of point. Each point has an .x and a .y numeric attribute.
    // The values are taken directly from the "d" attribute of an SVG "path" element.       
    function getPointPairs(points)
    {
        let pointPairs = {};

        pointPairs.startPair = {};
        pointPairs.startPair.point = points[0];
        pointPairs.startPair.control = points[1];

        pointPairs.endPair = {};
        pointPairs.endPair.point = points[points.length - 1];
        pointPairs.endPair.control = points[points.length - 2];

        if(points.length === 6)
        {
            pointPairs.tangentPair = {};
            pointPairs.tangentPair.control = points[2];
            pointPairs.tangentPair.point = points[3];
        }
        return pointPairs;
    }