Use references for Output/Input Values

[andrewdavidmackenzie]

Convert a function’s output to be inputs for multiple other processes, by having one copy but reference count it and free it then all of them have consumed it and the count drops to zero.

• list of output values
• Add output to it with count = number of destinations
• Each time an input takes it, reduce count
• remove from list when count goes to zero

[andrewdavidmackenzie]