Update release notes for release 1.6.0
Update release notes for release 1.6.0

FelixGV/voldemort,cshaxu/voldemort,squarY/voldemort,jalkjaer/voldemort,squarY/voldemort,mabh/voldemort,dallasmarlow/voldemort,voldemort/voldemort,LeoYao/voldemort,jwlent55/voldemort,bitti/voldemort,PratikDeshpande/voldemort,mabh/voldemort,gnb/voldemort,arunthirupathi/voldemort,stotch/voldemort,bhasudha/voldemort,arunthirupathi/voldemort,cshaxu/voldemort,gnb/voldemort,voldemort/voldemort,squarY/voldemort,LeoYao/voldemort,null-exception/voldemort,jwlent55/voldemort,null-exception/voldemort,LeoYao/voldemort,dallasmarlow/voldemort,stotch/voldemort,arunthirupathi/voldemort,cshaxu/voldemort,HB-SI/voldemort,dallasmarlow/voldemort,null-exception/voldemort,birendraa/voldemort,HB-SI/voldemort,dallasmarlow/voldemort,FelixGV/voldemort,gnb/voldemort,bhasudha/voldemort,LeoYao/voldemort,jwlent55/voldemort,dallasmarlow/voldemort,jeffpc/voldemort,gnb/voldemort,arunthirupathi/voldemort,FelixGV/voldemort,squarY/voldemort,squarY/voldemort,HB-SI/voldemort,arunthirupathi/voldemort,voldemort/voldemort,gnb/voldemort,voldemort/voldemort,dallasmarlow/voldemort,birendraa/voldemort,FelixGV/voldemort,rickbw/voldemort,squarY/voldemort,bhasudha/voldemort,PratikDeshpande/voldemort,bitti/voldemort,stotch/voldemort,mabh/voldemort,PratikDeshpande/voldemort,null-exception/voldemort,bitti/voldemort,null-exception/voldemort,HB-SI/voldemort,voldemort/voldemort,jeffpc/voldemort,jwlent55/voldemort,mabh/voldemort,LeoYao/voldemort,stotch/voldemort,cshaxu/voldemort,mabh/voldemort,rickbw/voldemort,arunthirupathi/voldemort,bhasudha/voldemort,PratikDeshpande/voldemort,birendraa/voldemort,voldemort/voldemort,HB-SI/voldemort,bhasudha/voldemort,stotch/voldemort,voldemort/voldemort,jalkjaer/voldemort,mabh/voldemort,PratikDeshpande/voldemort,PratikDeshpande/voldemort,cshaxu/voldemort,rickbw/voldemort,jalkjaer/voldemort,jeffpc/voldemort,bhasudha/voldemort,bitti/voldemort,rickbw/voldemort,bitti/voldemort,bitti/voldemort,jalkjaer/voldemort,squarY/voldemort,jalkjaer/voldemort,arunthirupathi/voldemort,gnb/voldemort,FelixGV/voldemort,FelixGV/voldemort,jeffpc/voldemort,rickbw/voldemort,birendraa/voldemort,jeffpc/voldemort,birendraa/voldemort,birendraa/voldemort,FelixGV/voldemort,cshaxu/voldemort,jeffpc/voldemort,stotch/voldemort,jalkjaer/voldemort,jwlent55/voldemort,LeoYao/voldemort,null-exception/voldemort,rickbw/voldemort,HB-SI/voldemort,jalkjaer/voldemort,jwlent55/voldemort,bitti/voldemort