should we still reference Perses in showcase notebook?

[atravitz]

When I first ran the showcase notebook without any contextual knowledge, I was confused as to why behavior was described as "Perses-like", since the Perses homepage comes with a big "under development" disclaimer.

I now understand that OpenFE borrowed from Perses, but for a new user I think this is more distracting than it is helpful. I suggest we rephrase or remove these references for the sake of clarity.

[IAlibay]

I think rephrasing would be good, but we need a good way to acknowledge our peers whose work we use in OpenFE. This would be a really good thing to bring up at the next protocol devs meeting!