Not all scripts in this repo are self-contained

I noticed some scripts in this repo have external dependencies.
For example the scales demo as well as several of the studies have a dependency on Polyperc, see
https://github.com/monome/we/blob/master/demos/scales.lua#L39

I was wondering how we want to handle this?
IMHO it would be better if the examples in this repo have no external dependencies.

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