Release v1.3.0
Release v1.3.0

bruceauyeung/heapster,piosz/heapster,huangyuqi/heapster,bluebreezecf/heapster,Stackdriver/heapster,AlmogBaku/heapster,Stackdriver/heapster,adfin/statster,luxas/heapster,piosz/heapster,bruceauyeung/heapster,krzyzacy/heapster,burmanm/heapster,huangyuqi/heapster,adfin/statster,bluebreezecf/heapster,krzyzacy/heapster,AlmogBaku/heapster,whuwxl/heapster,whuwxl/heapster,burmanm/heapster,luxas/heapster