docs: function vv(i, v, inc) {
  		var vn = !isNaN(v);
  		var nv = vn ? v : v || self.versionMatch[i] || '';
  		if (inc && vn) {
  			return +nv + 1;
  		} else if (inc) {
  			// increment the last numeric value sequence
  			return nv.replace(regexVerLast, function vvInc(m) {
  				return +m + 1;
  			});
  		}
  		return nv;
  	}