Add specialized .toString(format) to IMeasureTime within TimeSpan.

[electricessence]

Is simply a super useful feature to display time in a formatted string.

[electricessence]

Need to be considerate of localization.

[electricessence]

Something like this:

    var elapsed = this.elapsed.time, a:string[] = [];

    if(elapsed.days)
        a.push(pluralize(elapsed.days,"day"));

    if(elapsed.hours)
        a.push(pluralize(elapsed.hours,"hour"));

    if(elapsed.minutes)
        a.push(pluralize(elapsed.minutes,"minute"));

    if(elapsed.seconds)
        a.push(pluralize(elapsed.seconds,"second"));

    if(a.length>1)
        a.splice(a.length-1,0,"and");

    return a.join(", ").replace(", and, "," and ");