chore: update performance tests to use bench-node for benchmarking #332
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This simplifies our benchmark tests against node-iconv, using bench-node, which is a great tool for this kind of work.
It doesn’t matter that the tests can’t be run on Node 0.12 or older versions, since it’s already complicated to run node-iconv on those versions nowadays.
It would be great to be able to run the tests again on a new machine to see how much things have changed over the years in Node.js, but for that we’d need a clean machine, and we don’t have those resources available.