update Svelte to 1.58

[Rich-Harris]

hey — this updates the Svelte benchmarks to version 1.58, which fixes our abysmal row swapping performance. Thanks!

[krausest]

Thanks - but I'm afraid the keyed version looks horribly wrong:
https://www.rawgit.com/krausest/js-framework-benchmark/802a2ccf15857ef89ea0f5f7be6b88afab72b8fa/webdriver-ts-results/table.html

I've checked in the chrome timeline and can confirm that the measurement e.g. for select row seems correct:

The non-keyed version is also a bit slower, but much closer:

Can you please check what's wrong with it?

[Rich-Harris]

yikes! not sure what happened there. This is what it looked like shortly before I cut 1.58: http://windy-able.surge.sh/

I made some further changes, but only to tidy things up slightly (or so I thought) — I most have broken something badly. Will investigate. Thanks for the heads up!

[krausest]

I can confirm that if I change the version to 1.57.4 I'm seeing good performance. This is select row for 1.57.4:

And when I switch back to 1.58.0 I get: