ExtensionSummer, based on Stepper, but allowing floats as inputs, so that you can increment a sum with each step.
| trig | 
 The trigger. Trigger can be any signal. A trigger happens when the signal changes from non-positive to positive.  | 
| step | 
 The step size. Can be a Float  | 
| reset | 
 Resets the counter to   | 
| resetval | 
 Value to which the counter is reset when it receives a reset trigger.  |