Added test of deep copy method
Added test of deep copy method

voronaam/ical4j,ariordan/ical4j,ical4j/ical4j,amannm/ical4j,tschaible/ical4j,amannm/ical4j,ariordan/ical4j,ariordan/ical4j,tschaible/ical4j,ical4j/ical4j,ical4j/ical4j,voronaam/ical4j,voronaam/ical4j,amannm/ical4j,tschaible/ical4j