Changes
* '''Header (string):''' the label of the axis
* '''Interval (double):''' the interval between gridlines on the axis
* '''DateTimeIntervalType (int):''' the interval type in case of a date axis. The following values are possible:** Auto = 0,** Milliseconds = 1,** Seconds = 2,** Minutes = 3,** Hours = 4,** Days = 5,** Months = 6,** Years = 7
* '''LabelFormat (string):''' the format string to define how value labels are formatted. See [[#Label formatting|Label formatting]]
* '''Minimum (object):''' the minimum value to display on the axis
