Seeking heuristic tweaks

[djc]

Tweaks from

• initial draft oft hold_max with heuristic #657

[chris-laplante]

Looks good!

[djugei]

commented inline here: 41050b0#commitcomment-170873090

i think the variable should be called dejitter not something with max in its name.

[djc]

Quoting here because comments on commits tend not to be very accessible:

i feel like dejitter is the more appropriate name, i had it named something with max in its name during devlopment, but that specifies the implementation, not the function.

holding the maximum is good for header-formats, but maybe there is footer formats that want to hold the minimum. or we later on discover that calculating a median is better and covers all use cases etc.

I think this name better describes the current approach -- we can generalize later if needed.