XTCE13 — RelativeTime's ChangePerSecondRangeAlarm should be a TimeChangesPerSecondAlarmType

RelativeTimeParamaterType static and change alarms are both TimeAlarmRangesType. At the very least it would be clearer if the ChangePerSecondRangeAlarm is its own type.
A simple solution would be to create a new type (TimeChangePerSecondRangeAlarmType) and have it extend TimeAlarmRangesType.
(Assuming that it's correct that both of these should describe alarms in the same using same underlying type.)

Reuse of TimeAlarmRangesType Not Broken

The point of the issue here is seen. It is not obvious in the schema types, but re-use of schema elements is by design. The annotation describes how the physics should be interpreted. Propose not to change this.