import { deltaColumn } from "https://deno.land/x/pretty_benching@v0.3.3/mod.ts";
Defines a delta column, which shows the changes for the benchmark. Shows - when there was no previous measurements for the benchmark in the history.
Calculates delta on measuredRunsAvgMs by default, which can be changed in the options with key.
Parameters
history: prettyBenchmarkHistory<T>
optional
options: { key: DeltaKey<T>; }