Fixed typo in header.
Fixed bug that was affecting the display of dynDates objects.
Modified @dynSeries/plus method so that dynSeries objects defined over different non disjoint periods can be added.
Modified @dynSeries/minus method so that dynSeries objects defined over different non disjoint periods can be substracted.
Modified @dynSeries/mtimes method so that dynSeries objects defined over different non disjoint periods can be multiplied.
Modified @dynSeries/mrdivide method so that dynSeries objects defined over different non disjoint periods can be divided.