Option to connect data points with random term

[roaldarbol]

Hi @strengejacke, hope you're well!

I'm plotting some simple random models, with one binary predictor. Then I'm plotting the data with show_data = TRUE and couldn't help think that it would be a great addition if it was possible to connect the points with lines, kind of what you could imagine for a paired t-test (e.g. this). Do you think that would be feasible? It might require some tweaking when jitter is used (see related solved issue for ggbeeswarm)
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[roaldarbol]

As an aside, is there a way to colour the points (form either show_data or show_residuals) without including them in terms? Currently I'm struggling to find a way to colour the points but not the dot-whisker geom.