Add cumulative sum and product functions
Add cumulative sum and product functions

Change-Id: I0b98849033bf541c8660b39eee1e1882ea1e1a53

apmasell/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,apmasell/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,apmasell/flabbergast,apmasell/flabbergast,apmasell/flabbergast,flabbergast-config/flabbergast,apmasell/flabbergast