Crossing boundry between units in a single graph

Hey @rhysd , great work on this.
Is anything supposed to happen if some data crosses the boundry between say nanoseconds and microseconds?

In my benchmark here that has happened in the bottom two:
https://jasonwilliams.github.io/boa/dev/bench/

It looks like its become a lot slower, but actually it sped up from 1 us to 900 ns.
Unfortunately once the chart is made with a unit im guessing its fixed.

think i answered my own question
https://github.com/rhysd/github-action-benchmark/blob/master/src/default_index_html.ts#L198