Pathfinder exploration 3: Comparison to the Reinhold & Hekker 2020 paper

[gully]

Remake the figures in #14 and #15, but with the following change:

Rather than comparing EVEREST to TESS, compare EVEREST to Reinhold & Hekker's (Period, Amplitudes).

We should get the same answer, since they used the same K2 data. They will likely have some differences though. Those differences symbolize "repeatability", and serve as another important quality assurance step.